[1] 'Brown Revolution' is –
A.
growth of fodder industry
B.
growth of sea products
C.
growth of milk and milk products
D.
growth of food processing and soft drinks industries in India
Ans:
growth of food processing and soft drinks industries in India
Explanation :
Brown revolution is normally related to real estate and housing industry. However, in agriculture, this revolution is linked to cocoa.
[2] Mumbai receives more rainfall than Pune because –
A.
Mumbai is on the windward side
B.
Pune is at a greater elevation
C.
Mumbai is a coastal city
D.
Pune has greater vegetation than Mumbai
Ans:
Mumbai is on the windward side
Explanation :
Pune is on the leeward side of the western ghats and so lies on a rain shadow area. The south west monsoon empties all moisture on the windward side of the mountain range and reaches Pune with less moisture after crossing the mountain range. But Murnbai lies on the windward side and hence experiences heavy rainfall.
[3] Rajasthan revives very little rain because—
A.
it is too hot
B.
there is no water available and thus the winds remain dry
C.
the monsoon fails to reach this area
D.
the winds do not come across any barriers to cause the necessary uplift to cool the wind
Ans:
the winds do not come across any barriers to cause the necessary uplift to cool the wind
Explanation :
Rainfall decreases as winds move westwards up the Ganga Plains. Rajasthan receives very little rain as it lies in the rain-shadow of the Aravali Hills. The climate of Rajasthan varies greatly throughout the state. It is very hot and dry in summer in the desert areas, where dust storms also occur, while it is very cold during the winters. To the west of the Aravali range, the weather is characterized by low rainfall with erratic distribution, extremes of diurnal and annual temperatures, low humidity and high wind velocity. While in the east of the Aravali range, the weather is characterized by relatively low wind velocity and high humidity with better rainfall.
[4] Central Highlands of Indian peninsular block are formed of –
A.
Sedimentary and metamorphic rocks
B.
Igneous and sedimentary rocks
C.
Igneous and metamorphic rocks
D.
Sedimentary rocks
Ans:
Igneous and metamorphic rocks
Explanation :
The Peninsular region is divided into the two parts by westward flowing Narmada river (1) the Central Highlands and (2) the Deccan Plateau. The Central Highlands make the northern part of the peninsular block. These highlands are made up of hard igneous and metamorphic rocks.
[5] Social forestry is –
A.
growing different types of plants together on private land
B.
management of forest by co-operative societies
C.
growing one type of plant in government owned land
D.
growing and management of useful plants on government owned land
Ans:
growing and management of useful plants on government owned land
Explanation :
Social forestry means the management and protection of forests and afforestation on barren lands with the purpose of helping in the environmental, social and rural development. Under social forestry, trees are planted in village common land, Government wasteland and Panchayat land. Through the social forestry scheme, the government has involved community participation, as part of a drive towards afforestation, and rehabilitating the degraded forest and common lands.
[6] Which of the following are alternative names for the river "Brahmaputra"?
A.
Yamuna, Yarlung Zangbo and Tsangpo
B.
Yamuna, Megna and Tsangpo Yamuna
C.
Jamuna, Siang, Yarlung Zangbo and Tsangpo
D.
Jamuna, Siang, Yarlung Zangbo, Megna and Tsangpo
Ans:
Jamuna, Siang, Yarlung Zangbo, Megna and Tsangpo
Explanation :
The Brahmaputra goes by a number of names during its journey from the Angst glacier in the Himalayas to the sea (Bay of Bengal). It begins as the Yarlung Tsangpo in southwestern Tibet and becomes the Dihang or Siangin China and Arunachal Pradesh. It flows southwest through the Assam Valley as Brahmaputra and south through Bangladesh as the Jamuna. In the vast Ganges Delta, it merges with the Padma (name of the river Ganges in Bangladesh) and finally the Meghna. From here, it is known as Meghna before emptying into the Bay of Bengal.
[7] Rotation of crops means –
A.
growing of different crops in succession to maintain soil fertility
B.
some crops are grown again and again
C.
two or more crops are grown simultaneously to increase productivity
D.
None of the above
Ans:
growing of different crops in succession to maintain soil fertility
Explanation :
Crop rotation is the practice of growing a series of dissimilar/different types of crops in the same area in sequential seasons. Crop rotation confers various benefits to the soil. A traditional element of crop rotation is the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops. Crop rotation also mitigates the build-up of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants.
[8] Sex-ratio is calculated as :
A.
No. of children per 1,000 people in a Country.
B.
No. of males per 1,000 females in a Country.
C.
No. of females per 1,000 males in a Country.
D.
No. of people per 1,000 children in a Country.
Ans:
No. of females per 1,000 males in a Country.
Explanation :
Sex ratio is used to describe the number of females per 1000 of males in a region or country. Like most sexual species, the sex ratio in humans is approximately 1:1. As per the 2011 Census, Sex Ratio in India currently stands at 943 females available for every 1000 males.
[9] The two richest Ecozones of India are –
A.
The Himalayas and Vindhyas
B.
The Himalayas and Eastern Ghats
C.
The Himalayas and Western Ghats
D.
The Himalayas and Aravallis
Ans:
The Himalayas and Western Ghats
Explanation :
The Himalayas and, the Western Ghats are known for rich biodiversity they support. Several species of ciidemic plant and animal are found in these zones. After Africa, Indian peninsula has the richest diversity of life forms on the face of the Earth.
[10] The Kulu Valley is situated between –
A.
Ladakh and Pirpanjal
B.
Ranjoti and Nag Tibba
C.
Lesser Himalayas and Siwalik
D.
Dhauladhar and Pirpanjal
Ans:
Ladakh and Pirpanjal
Explanation :
Kullu valley is sandwiched between the Pir Panjai, Lower Himalayan and Great Himalayan range. It connects with the Lahul and Spiti valleys via Rohtang Pass. ----------x-----------
[11] The science of map-making is –
A.
Cartography
B.
Geography
C.
Carpology
D.
Geology
Ans:
Cartography
Explanation :
Cartography (chartes or charax = sheet of papyrus (paper) and graphein = to write) is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.
[12] An artificial ecosystem is represented by –
A.
pisciculture tank
B.
agricultural land
C.
zoo
D.
aquarium
Ans:
aquarium
Explanation :
An artificial ecosystem is one created by people. You can create an artificial ecosystem in an aquarium or terrarium. Nathaniel Bagshaw Ward is credited as the inventor of the terrarium, which he accidently created in 1829.
[13] Which is the most stable ecosystem?
A.
Desert
B.
Ocean
C.
Mountain
D.
Forest
Ans:
Ocean
Explanation :
Ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete, Natural ecosystem. It is an ecosystem developed -under natural conditions without any appreciable human interference. Natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., fresh water, lake, pond, river, sea). Oceans constitute the most stable ecosystem.
[14] Which of the following exhibits unidirectional flow in an ecosystem?
A.
Light
B.
Energy
C.
Water
D.
Biomass
Ans:
Energy
Explanation :
Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for repeated use by the organisms in the ecosystem's community. However, energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem. Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
[15] The one who is engaged in scientific drawing of maps is called –
A.
Geographer
B.
Cartographer
C.
Meteorologist
D.
Geologist
Ans:
Cartographer
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
Brown revolution is normally related to real estate and housing industry. However, in agriculture, this revolution is linked to cocoa.
[2] Mumbai receives more rainfall than Pune because –
A.
Mumbai is on the windward side
B.
Pune is at a greater elevation
C.
Mumbai is a coastal city
D.
Pune has greater vegetation than Mumbai
Ans:
Mumbai is on the windward side
Explanation :
Pune is on the leeward side of the western ghats and so lies on a rain shadow area. The south west monsoon empties all moisture on the windward side of the mountain range and reaches Pune with less moisture after crossing the mountain range. But Murnbai lies on the windward side and hence experiences heavy rainfall.
[3] Rajasthan revives very little rain because—
A.
it is too hot
B.
there is no water available and thus the winds remain dry
C.
the monsoon fails to reach this area
D.
the winds do not come across any barriers to cause the necessary uplift to cool the wind
Ans:
the winds do not come across any barriers to cause the necessary uplift to cool the wind
Explanation :
Rainfall decreases as winds move westwards up the Ganga Plains. Rajasthan receives very little rain as it lies in the rain-shadow of the Aravali Hills. The climate of Rajasthan varies greatly throughout the state. It is very hot and dry in summer in the desert areas, where dust storms also occur, while it is very cold during the winters. To the west of the Aravali range, the weather is characterized by low rainfall with erratic distribution, extremes of diurnal and annual temperatures, low humidity and high wind velocity. While in the east of the Aravali range, the weather is characterized by relatively low wind velocity and high humidity with better rainfall.
[4] Central Highlands of Indian peninsular block are formed of –
A.
Sedimentary and metamorphic rocks
B.
Igneous and sedimentary rocks
C.
Igneous and metamorphic rocks
D.
Sedimentary rocks
Ans:
Igneous and metamorphic rocks
Explanation :
The Peninsular region is divided into the two parts by westward flowing Narmada river (1) the Central Highlands and (2) the Deccan Plateau. The Central Highlands make the northern part of the peninsular block. These highlands are made up of hard igneous and metamorphic rocks.
[5] Social forestry is –
A.
growing different types of plants together on private land
B.
management of forest by co-operative societies
C.
growing one type of plant in government owned land
D.
growing and management of useful plants on government owned land
Ans:
growing and management of useful plants on government owned land
Explanation :
Social forestry means the management and protection of forests and afforestation on barren lands with the purpose of helping in the environmental, social and rural development. Under social forestry, trees are planted in village common land, Government wasteland and Panchayat land. Through the social forestry scheme, the government has involved community participation, as part of a drive towards afforestation, and rehabilitating the degraded forest and common lands.
[6] Which of the following are alternative names for the river "Brahmaputra"?
A.
Yamuna, Yarlung Zangbo and Tsangpo
B.
Yamuna, Megna and Tsangpo Yamuna
C.
Jamuna, Siang, Yarlung Zangbo and Tsangpo
D.
Jamuna, Siang, Yarlung Zangbo, Megna and Tsangpo
Ans:
Jamuna, Siang, Yarlung Zangbo, Megna and Tsangpo
Explanation :
The Brahmaputra goes by a number of names during its journey from the Angst glacier in the Himalayas to the sea (Bay of Bengal). It begins as the Yarlung Tsangpo in southwestern Tibet and becomes the Dihang or Siangin China and Arunachal Pradesh. It flows southwest through the Assam Valley as Brahmaputra and south through Bangladesh as the Jamuna. In the vast Ganges Delta, it merges with the Padma (name of the river Ganges in Bangladesh) and finally the Meghna. From here, it is known as Meghna before emptying into the Bay of Bengal.
[7] Rotation of crops means –
A.
growing of different crops in succession to maintain soil fertility
B.
some crops are grown again and again
C.
two or more crops are grown simultaneously to increase productivity
D.
None of the above
Ans:
growing of different crops in succession to maintain soil fertility
Explanation :
Crop rotation is the practice of growing a series of dissimilar/different types of crops in the same area in sequential seasons. Crop rotation confers various benefits to the soil. A traditional element of crop rotation is the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops. Crop rotation also mitigates the build-up of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants.
[8] Sex-ratio is calculated as :
A.
No. of children per 1,000 people in a Country.
B.
No. of males per 1,000 females in a Country.
C.
No. of females per 1,000 males in a Country.
D.
No. of people per 1,000 children in a Country.
Ans:
No. of females per 1,000 males in a Country.
Explanation :
Sex ratio is used to describe the number of females per 1000 of males in a region or country. Like most sexual species, the sex ratio in humans is approximately 1:1. As per the 2011 Census, Sex Ratio in India currently stands at 943 females available for every 1000 males.
[9] The two richest Ecozones of India are –
A.
The Himalayas and Vindhyas
B.
The Himalayas and Eastern Ghats
C.
The Himalayas and Western Ghats
D.
The Himalayas and Aravallis
Ans:
The Himalayas and Western Ghats
Explanation :
The Himalayas and, the Western Ghats are known for rich biodiversity they support. Several species of ciidemic plant and animal are found in these zones. After Africa, Indian peninsula has the richest diversity of life forms on the face of the Earth.
[10] The Kulu Valley is situated between –
A.
Ladakh and Pirpanjal
B.
Ranjoti and Nag Tibba
C.
Lesser Himalayas and Siwalik
D.
Dhauladhar and Pirpanjal
Ans:
Ladakh and Pirpanjal
Explanation :
Kullu valley is sandwiched between the Pir Panjai, Lower Himalayan and Great Himalayan range. It connects with the Lahul and Spiti valleys via Rohtang Pass. ----------x-----------
[11] The science of map-making is –
A.
Cartography
B.
Geography
C.
Carpology
D.
Geology
Ans:
Cartography
Explanation :
Cartography (chartes or charax = sheet of papyrus (paper) and graphein = to write) is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.
[12] An artificial ecosystem is represented by –
A.
pisciculture tank
B.
agricultural land
C.
zoo
D.
aquarium
Ans:
aquarium
Explanation :
An artificial ecosystem is one created by people. You can create an artificial ecosystem in an aquarium or terrarium. Nathaniel Bagshaw Ward is credited as the inventor of the terrarium, which he accidently created in 1829.
[13] Which is the most stable ecosystem?
A.
Desert
B.
Ocean
C.
Mountain
D.
Forest
Ans:
Ocean
Explanation :
Ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete, Natural ecosystem. It is an ecosystem developed -under natural conditions without any appreciable human interference. Natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., fresh water, lake, pond, river, sea). Oceans constitute the most stable ecosystem.
[14] Which of the following exhibits unidirectional flow in an ecosystem?
A.
Light
B.
Energy
C.
Water
D.
Biomass
Ans:
Energy
Explanation :
Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for repeated use by the organisms in the ecosystem's community. However, energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem. Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
[15] The one who is engaged in scientific drawing of maps is called –
A.
Geographer
B.
Cartographer
C.
Meteorologist
D.
Geologist
Ans:
Cartographer
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
Rainfall decreases as winds move westwards up the Ganga Plains. Rajasthan receives very little rain as it lies in the rain-shadow of the Aravali Hills. The climate of Rajasthan varies greatly throughout the state. It is very hot and dry in summer in the desert areas, where dust storms also occur, while it is very cold during the winters. To the west of the Aravali range, the weather is characterized by low rainfall with erratic distribution, extremes of diurnal and annual temperatures, low humidity and high wind velocity. While in the east of the Aravali range, the weather is characterized by relatively low wind velocity and high humidity with better rainfall.
[4] Central Highlands of Indian peninsular block are formed of –
A.
Sedimentary and metamorphic rocks
B.
Igneous and sedimentary rocks
C.
Igneous and metamorphic rocks
D.
Sedimentary rocks
Ans:
Igneous and metamorphic rocks
Explanation :
The Peninsular region is divided into the two parts by westward flowing Narmada river (1) the Central Highlands and (2) the Deccan Plateau. The Central Highlands make the northern part of the peninsular block. These highlands are made up of hard igneous and metamorphic rocks.
[5] Social forestry is –
A.
growing different types of plants together on private land
B.
management of forest by co-operative societies
C.
growing one type of plant in government owned land
D.
growing and management of useful plants on government owned land
Ans:
growing and management of useful plants on government owned land
Explanation :
Social forestry means the management and protection of forests and afforestation on barren lands with the purpose of helping in the environmental, social and rural development. Under social forestry, trees are planted in village common land, Government wasteland and Panchayat land. Through the social forestry scheme, the government has involved community participation, as part of a drive towards afforestation, and rehabilitating the degraded forest and common lands.
[6] Which of the following are alternative names for the river "Brahmaputra"?
A.
Yamuna, Yarlung Zangbo and Tsangpo
B.
Yamuna, Megna and Tsangpo Yamuna
C.
Jamuna, Siang, Yarlung Zangbo and Tsangpo
D.
Jamuna, Siang, Yarlung Zangbo, Megna and Tsangpo
Ans:
Jamuna, Siang, Yarlung Zangbo, Megna and Tsangpo
Explanation :
The Brahmaputra goes by a number of names during its journey from the Angst glacier in the Himalayas to the sea (Bay of Bengal). It begins as the Yarlung Tsangpo in southwestern Tibet and becomes the Dihang or Siangin China and Arunachal Pradesh. It flows southwest through the Assam Valley as Brahmaputra and south through Bangladesh as the Jamuna. In the vast Ganges Delta, it merges with the Padma (name of the river Ganges in Bangladesh) and finally the Meghna. From here, it is known as Meghna before emptying into the Bay of Bengal.
[7] Rotation of crops means –
A.
growing of different crops in succession to maintain soil fertility
B.
some crops are grown again and again
C.
two or more crops are grown simultaneously to increase productivity
D.
None of the above
Ans:
growing of different crops in succession to maintain soil fertility
Explanation :
Crop rotation is the practice of growing a series of dissimilar/different types of crops in the same area in sequential seasons. Crop rotation confers various benefits to the soil. A traditional element of crop rotation is the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops. Crop rotation also mitigates the build-up of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants.
[8] Sex-ratio is calculated as :
A.
No. of children per 1,000 people in a Country.
B.
No. of males per 1,000 females in a Country.
C.
No. of females per 1,000 males in a Country.
D.
No. of people per 1,000 children in a Country.
Ans:
No. of females per 1,000 males in a Country.
Explanation :
Sex ratio is used to describe the number of females per 1000 of males in a region or country. Like most sexual species, the sex ratio in humans is approximately 1:1. As per the 2011 Census, Sex Ratio in India currently stands at 943 females available for every 1000 males.
[9] The two richest Ecozones of India are –
A.
The Himalayas and Vindhyas
B.
The Himalayas and Eastern Ghats
C.
The Himalayas and Western Ghats
D.
The Himalayas and Aravallis
Ans:
The Himalayas and Western Ghats
Explanation :
The Himalayas and, the Western Ghats are known for rich biodiversity they support. Several species of ciidemic plant and animal are found in these zones. After Africa, Indian peninsula has the richest diversity of life forms on the face of the Earth.
[10] The Kulu Valley is situated between –
A.
Ladakh and Pirpanjal
B.
Ranjoti and Nag Tibba
C.
Lesser Himalayas and Siwalik
D.
Dhauladhar and Pirpanjal
Ans:
Ladakh and Pirpanjal
Explanation :
Kullu valley is sandwiched between the Pir Panjai, Lower Himalayan and Great Himalayan range. It connects with the Lahul and Spiti valleys via Rohtang Pass. ----------x-----------
[11] The science of map-making is –
A.
Cartography
B.
Geography
C.
Carpology
D.
Geology
Ans:
Cartography
Explanation :
Cartography (chartes or charax = sheet of papyrus (paper) and graphein = to write) is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.
[12] An artificial ecosystem is represented by –
A.
pisciculture tank
B.
agricultural land
C.
zoo
D.
aquarium
Ans:
aquarium
Explanation :
An artificial ecosystem is one created by people. You can create an artificial ecosystem in an aquarium or terrarium. Nathaniel Bagshaw Ward is credited as the inventor of the terrarium, which he accidently created in 1829.
[13] Which is the most stable ecosystem?
A.
Desert
B.
Ocean
C.
Mountain
D.
Forest
Ans:
Ocean
Explanation :
Ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete, Natural ecosystem. It is an ecosystem developed -under natural conditions without any appreciable human interference. Natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., fresh water, lake, pond, river, sea). Oceans constitute the most stable ecosystem.
[14] Which of the following exhibits unidirectional flow in an ecosystem?
A.
Light
B.
Energy
C.
Water
D.
Biomass
Ans:
Energy
Explanation :
Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for repeated use by the organisms in the ecosystem's community. However, energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem. Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
[15] The one who is engaged in scientific drawing of maps is called –
A.
Geographer
B.
Cartographer
C.
Meteorologist
D.
Geologist
Ans:
Cartographer
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
Social forestry means the management and protection of forests and afforestation on barren lands with the purpose of helping in the environmental, social and rural development. Under social forestry, trees are planted in village common land, Government wasteland and Panchayat land. Through the social forestry scheme, the government has involved community participation, as part of a drive towards afforestation, and rehabilitating the degraded forest and common lands.
[6] Which of the following are alternative names for the river "Brahmaputra"?
A.
Yamuna, Yarlung Zangbo and Tsangpo
B.
Yamuna, Megna and Tsangpo Yamuna
C.
Jamuna, Siang, Yarlung Zangbo and Tsangpo
D.
Jamuna, Siang, Yarlung Zangbo, Megna and Tsangpo
Ans:
Jamuna, Siang, Yarlung Zangbo, Megna and Tsangpo
Explanation :
The Brahmaputra goes by a number of names during its journey from the Angst glacier in the Himalayas to the sea (Bay of Bengal). It begins as the Yarlung Tsangpo in southwestern Tibet and becomes the Dihang or Siangin China and Arunachal Pradesh. It flows southwest through the Assam Valley as Brahmaputra and south through Bangladesh as the Jamuna. In the vast Ganges Delta, it merges with the Padma (name of the river Ganges in Bangladesh) and finally the Meghna. From here, it is known as Meghna before emptying into the Bay of Bengal.
[7] Rotation of crops means –
A.
growing of different crops in succession to maintain soil fertility
B.
some crops are grown again and again
C.
two or more crops are grown simultaneously to increase productivity
D.
None of the above
Ans:
growing of different crops in succession to maintain soil fertility
Explanation :
Crop rotation is the practice of growing a series of dissimilar/different types of crops in the same area in sequential seasons. Crop rotation confers various benefits to the soil. A traditional element of crop rotation is the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops. Crop rotation also mitigates the build-up of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants.
[8] Sex-ratio is calculated as :
A.
No. of children per 1,000 people in a Country.
B.
No. of males per 1,000 females in a Country.
C.
No. of females per 1,000 males in a Country.
D.
No. of people per 1,000 children in a Country.
Ans:
No. of females per 1,000 males in a Country.
Explanation :
Sex ratio is used to describe the number of females per 1000 of males in a region or country. Like most sexual species, the sex ratio in humans is approximately 1:1. As per the 2011 Census, Sex Ratio in India currently stands at 943 females available for every 1000 males.
[9] The two richest Ecozones of India are –
A.
The Himalayas and Vindhyas
B.
The Himalayas and Eastern Ghats
C.
The Himalayas and Western Ghats
D.
The Himalayas and Aravallis
Ans:
The Himalayas and Western Ghats
Explanation :
The Himalayas and, the Western Ghats are known for rich biodiversity they support. Several species of ciidemic plant and animal are found in these zones. After Africa, Indian peninsula has the richest diversity of life forms on the face of the Earth.
[10] The Kulu Valley is situated between –
A.
Ladakh and Pirpanjal
B.
Ranjoti and Nag Tibba
C.
Lesser Himalayas and Siwalik
D.
Dhauladhar and Pirpanjal
Ans:
Ladakh and Pirpanjal
Explanation :
Kullu valley is sandwiched between the Pir Panjai, Lower Himalayan and Great Himalayan range. It connects with the Lahul and Spiti valleys via Rohtang Pass. ----------x-----------
[11] The science of map-making is –
A.
Cartography
B.
Geography
C.
Carpology
D.
Geology
Ans:
Cartography
Explanation :
Cartography (chartes or charax = sheet of papyrus (paper) and graphein = to write) is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.
[12] An artificial ecosystem is represented by –
A.
pisciculture tank
B.
agricultural land
C.
zoo
D.
aquarium
Ans:
aquarium
Explanation :
An artificial ecosystem is one created by people. You can create an artificial ecosystem in an aquarium or terrarium. Nathaniel Bagshaw Ward is credited as the inventor of the terrarium, which he accidently created in 1829.
[13] Which is the most stable ecosystem?
A.
Desert
B.
Ocean
C.
Mountain
D.
Forest
Ans:
Ocean
Explanation :
Ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete, Natural ecosystem. It is an ecosystem developed -under natural conditions without any appreciable human interference. Natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., fresh water, lake, pond, river, sea). Oceans constitute the most stable ecosystem.
[14] Which of the following exhibits unidirectional flow in an ecosystem?
A.
Light
B.
Energy
C.
Water
D.
Biomass
Ans:
Energy
Explanation :
Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for repeated use by the organisms in the ecosystem's community. However, energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem. Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
[15] The one who is engaged in scientific drawing of maps is called –
A.
Geographer
B.
Cartographer
C.
Meteorologist
D.
Geologist
Ans:
Cartographer
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
Crop rotation is the practice of growing a series of dissimilar/different types of crops in the same area in sequential seasons. Crop rotation confers various benefits to the soil. A traditional element of crop rotation is the replenishment of nitrogen through the use of green manure in sequence with cereals and other crops. Crop rotation also mitigates the build-up of pathogens and pests that often occurs when one species is continuously cropped, and can also improve soil structure and fertility by alternating deep-rooted and shallow-rooted plants.
[8] Sex-ratio is calculated as :
A.
No. of children per 1,000 people in a Country.
B.
No. of males per 1,000 females in a Country.
C.
No. of females per 1,000 males in a Country.
D.
No. of people per 1,000 children in a Country.
Ans:
No. of females per 1,000 males in a Country.
Explanation :
Sex ratio is used to describe the number of females per 1000 of males in a region or country. Like most sexual species, the sex ratio in humans is approximately 1:1. As per the 2011 Census, Sex Ratio in India currently stands at 943 females available for every 1000 males.
[9] The two richest Ecozones of India are –
A.
The Himalayas and Vindhyas
B.
The Himalayas and Eastern Ghats
C.
The Himalayas and Western Ghats
D.
The Himalayas and Aravallis
Ans:
The Himalayas and Western Ghats
Explanation :
The Himalayas and, the Western Ghats are known for rich biodiversity they support. Several species of ciidemic plant and animal are found in these zones. After Africa, Indian peninsula has the richest diversity of life forms on the face of the Earth.
[10] The Kulu Valley is situated between –
A.
Ladakh and Pirpanjal
B.
Ranjoti and Nag Tibba
C.
Lesser Himalayas and Siwalik
D.
Dhauladhar and Pirpanjal
Ans:
Ladakh and Pirpanjal
Explanation :
Kullu valley is sandwiched between the Pir Panjai, Lower Himalayan and Great Himalayan range. It connects with the Lahul and Spiti valleys via Rohtang Pass. ----------x-----------
[11] The science of map-making is –
A.
Cartography
B.
Geography
C.
Carpology
D.
Geology
Ans:
Cartography
Explanation :
Cartography (chartes or charax = sheet of papyrus (paper) and graphein = to write) is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.
[12] An artificial ecosystem is represented by –
A.
pisciculture tank
B.
agricultural land
C.
zoo
D.
aquarium
Ans:
aquarium
Explanation :
An artificial ecosystem is one created by people. You can create an artificial ecosystem in an aquarium or terrarium. Nathaniel Bagshaw Ward is credited as the inventor of the terrarium, which he accidently created in 1829.
[13] Which is the most stable ecosystem?
A.
Desert
B.
Ocean
C.
Mountain
D.
Forest
Ans:
Ocean
Explanation :
Ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete, Natural ecosystem. It is an ecosystem developed -under natural conditions without any appreciable human interference. Natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., fresh water, lake, pond, river, sea). Oceans constitute the most stable ecosystem.
[14] Which of the following exhibits unidirectional flow in an ecosystem?
A.
Light
B.
Energy
C.
Water
D.
Biomass
Ans:
Energy
Explanation :
Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for repeated use by the organisms in the ecosystem's community. However, energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem. Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
[15] The one who is engaged in scientific drawing of maps is called –
A.
Geographer
B.
Cartographer
C.
Meteorologist
D.
Geologist
Ans:
Cartographer
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
The Himalayas and, the Western Ghats are known for rich biodiversity they support. Several species of ciidemic plant and animal are found in these zones. After Africa, Indian peninsula has the richest diversity of life forms on the face of the Earth.
[10] The Kulu Valley is situated between –
A.
Ladakh and Pirpanjal
B.
Ranjoti and Nag Tibba
C.
Lesser Himalayas and Siwalik
D.
Dhauladhar and Pirpanjal
Ans:
Ladakh and Pirpanjal
Explanation :
Kullu valley is sandwiched between the Pir Panjai, Lower Himalayan and Great Himalayan range. It connects with the Lahul and Spiti valleys via Rohtang Pass. ----------x-----------
[11] The science of map-making is –
A.
Cartography
B.
Geography
C.
Carpology
D.
Geology
Ans:
Cartography
Explanation :
Cartography (chartes or charax = sheet of papyrus (paper) and graphein = to write) is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.
[12] An artificial ecosystem is represented by –
A.
pisciculture tank
B.
agricultural land
C.
zoo
D.
aquarium
Ans:
aquarium
Explanation :
An artificial ecosystem is one created by people. You can create an artificial ecosystem in an aquarium or terrarium. Nathaniel Bagshaw Ward is credited as the inventor of the terrarium, which he accidently created in 1829.
[13] Which is the most stable ecosystem?
A.
Desert
B.
Ocean
C.
Mountain
D.
Forest
Ans:
Ocean
Explanation :
Ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete, Natural ecosystem. It is an ecosystem developed -under natural conditions without any appreciable human interference. Natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., fresh water, lake, pond, river, sea). Oceans constitute the most stable ecosystem.
[14] Which of the following exhibits unidirectional flow in an ecosystem?
A.
Light
B.
Energy
C.
Water
D.
Biomass
Ans:
Energy
Explanation :
Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for repeated use by the organisms in the ecosystem's community. However, energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem. Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
[15] The one who is engaged in scientific drawing of maps is called –
A.
Geographer
B.
Cartographer
C.
Meteorologist
D.
Geologist
Ans:
Cartographer
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
Cartography (chartes or charax = sheet of papyrus (paper) and graphein = to write) is the study and practice of making maps. Combining science, aesthetics, and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.
[12] An artificial ecosystem is represented by –
A.
pisciculture tank
B.
agricultural land
C.
zoo
D.
aquarium
Ans:
aquarium
Explanation :
An artificial ecosystem is one created by people. You can create an artificial ecosystem in an aquarium or terrarium. Nathaniel Bagshaw Ward is credited as the inventor of the terrarium, which he accidently created in 1829.
[13] Which is the most stable ecosystem?
A.
Desert
B.
Ocean
C.
Mountain
D.
Forest
Ans:
Ocean
Explanation :
Ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete, Natural ecosystem. It is an ecosystem developed -under natural conditions without any appreciable human interference. Natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., fresh water, lake, pond, river, sea). Oceans constitute the most stable ecosystem.
[14] Which of the following exhibits unidirectional flow in an ecosystem?
A.
Light
B.
Energy
C.
Water
D.
Biomass
Ans:
Energy
Explanation :
Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for repeated use by the organisms in the ecosystem's community. However, energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem. Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
[15] The one who is engaged in scientific drawing of maps is called –
A.
Geographer
B.
Cartographer
C.
Meteorologist
D.
Geologist
Ans:
Cartographer
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
Ecosystem can be natural or man-made, large or small, permanent or temporary, complete or incomplete, Natural ecosystem. It is an ecosystem developed -under natural conditions without any appreciable human interference. Natural ecosystem can be terrestrial (e.g., forest, desert, grassland) or aquatic (e.g., fresh water, lake, pond, river, sea). Oceans constitute the most stable ecosystem.
[14] Which of the following exhibits unidirectional flow in an ecosystem?
A.
Light
B.
Energy
C.
Water
D.
Biomass
Ans:
Energy
Explanation :
Ecosystems contain essentially two kinds of commodities: matter (nutrients) and energy. Material nutrients cycle through the biotic and abiotic parts of the ecosystem, available for repeated use by the organisms in the ecosystem's community. However, energy enters an ecosystem by being used to convert low-energy carbon dioxide into high-energy carbohydrate, then passes through one or more of the organisms of the community, and is then lost to the ecosystem. Eventually, all of the energy that enters the ecosystem is lost in the form of heat.
[15] The one who is engaged in scientific drawing of maps is called –
A.
Geographer
B.
Cartographer
C.
Meteorologist
D.
Geologist
Ans:
Cartographer
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
A person who draws maps and charts is a cartographer. Cartographers are persons specially trained in the art and skill of map and chart making. Cartographers, that is, those who draw and prepare charts, need a very good knowledge of geography and the related details, and should also have the art of illustrating the different features of a place very vividly and clearly by using different colors and symbols.
[16] Rubber plantations are found in –
A.
Temperate forests
B.
Mountain regions
C.
Polar regions
D.
Equatorial regions
Ans:
Equatorial regions
Explanation :
The rubber plant grows wild in the equatorial regions of the world which are marked by rainfall of around 250 cm evenly distributed without any marked dry season and with at least 100 rainy days per year; temperature range of about 20°C to 34°C with a monthly mean of 25°C to 28°C; and high atmospheric humidity of around 80%.The three largest producing countries, Thailand, Indonesia and Malaysia, together account for around 72% of all natural rubber production.
[17] The main cause of Tsunami is :
A.
Volcanoes
B.
Cyclones
C.
Earthquake on sea floor
D.
Moon's attraction
Ans:
Earthquake on sea floor
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
A tsunami is a series of water waves caused by the displacement of a large volume of a body of water, typically an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.
[18] Tides are caused by the gravitational pull of the –
A.
Earth on the Moon
B.
Earth on the Sun
C.
Sun and Moon on the Earth
D.
Moon on the Earth
Ans:
Sun and Moon on the Earth
Explanation :
Tide-generating forces (TGF) are a result of the gravitational attraction between the earth, the sun, and the moon and the centrifugal force due to the relative motions of the moon around the earth, and the earth around the sun. While these forces exactly balance on average, the local mismatch at the earth's surface creates a horizontal force directed towards the surface points closest and farthest from the moon.
[19] Very strong and cold icy winds that blow in the Polar regions are called –
A.
Typhoons
B.
Tornadoes
C.
Blizzards
D.
Polar winds
Ans:
Blizzards
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
A blizzard is a severe snowstorm characterized by strong winds and low temperatures. The difference between a blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have sustained winds or frequent gusts that are greater than or equal to 56 km/h (35 mph) with blowing or drifting snow which reduces visibility to 400 meters or a quarter mile or less and must last for a prolonged period of time — typically three hours or more.
[20] Condensation is the reverse of –
A.
Vaporization
B.
Smog
C.
Cirrus cloud
D.
Fog
Ans:
Vaporization
Explanation :
Condensation is the change of physical state of matter from gaseous phase into liquid phase and is the reverse of vaporization. When the relative humidity reaches 100 per cent, the air is completely saturated. The air temperature is said to be as dew-point.
[21] In atmosphere the lowermost layer is –
A.
troposphere
B.
exosphere
C.
ionosphere
D.
strato sphere
Ans:
troposphere
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
The troposphere is the lowest portion of Earth's atmosphere. It contains approximately 80% of the atmosphere's mass and 99% of its water vapor and aerosols. The average depth of the troposphere is approximately 17 km in the middle latitudes. It is deeper in the tropics, up to 20 kin, and shallower near the Polar Regions, at 7 km in summer, and indistinct in winter. Most of the phenomena we associate with day-to-day weather occur in the troposphere
[22] The lower layer of atmosphere is called –
A.
exosphere
B.
troposphere
C.
ionosphere
D.
mesosphere
Ans:
troposphere
Explanation :
The troposphere is the lowest layer of the Earth's atmosphere, The air is very well mixed and the temperature decreases with altitude.
[23] Frontal Rain is caused by –
A.
Convection current
B.
Winds from sea
C.
Cyclonic activity
D.
Condensation of water evaporated from mountains
Ans:
Cyclonic activity
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
Frontal rainfall is a type of precipitation which occurs when a warm air mass and a cold air mass meet. Extra-tropical cyclones form as waves along weather fronts before occluding later in their life cycle as cold core cyclones. Cyclogenesis is the development or strengthening of cyclonic circulation in the atmosphere (a low pressure area).
[24] Smog is a combination of –
A.
air and water vapour
B.
water and smoke
C.
fire and water
D.
smoke and fog
Ans:
smoke and fog
Explanation :
The term "smog' was first used in London during the early 1900's to describe the combination of smoke and fog. What we typically call "smog" today is a mixture of pollutants but is primarily made up of ground-level ozone.
[25] The deposits of the ancient Tethys Sea were folded to form the :
A.
Himalayas
B.
Rockies
C.
Andes
D.
Alps
Ans:
Himalayas
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.
Explanation :
Around 200 million years ago (also known as the Middle Permian Period), an extensive sea stretched along the latitudinal area presently occupied by the Himalayas. This sea was named the Tethys. Around this period, the super continent Pangaea began to gradually split into different land masses and move apart in different directions.