[1] The transfer of minerals from top soil to subsoil through soil-water is called?
A.
Percolation
B.
Conduction
C.
Leaching
D.
Transpiration
Ans:
Leaching
Explanation :
Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. As water from rain, flooding, or other sources seeps into the ground, it can dissolve chemicals and carry them into the underground water supply. Mineral nutrients lost from the soil system become unavailable for plant uptake.
[2] Tropical rain forest is characterised by –
A.
Absence of trees
B.
Least productivity
C.
Maximum biodiversity
D.
Minimum biodiversity
Ans:
Maximum biodiversity
Explanation :
Tropical rainforests exhibit high levels of biodiversity. Around 40% to 75% of all biotic species are indigenous to the rainforests. Rainforests are home to half of all the living animal and plant species on the planet. Two-thirds of all flowering plants can be found in rainforests.
[3] Natural sources of air pollution are –
A.
Forest fires
B.
Volcanic eruptions
C.
Dust storm
D.
Smoke from burning dry leaves
Ans:
Volcanic eruptions
Explanation :
Some of the natural sources of air pollution are ground dust, salt spray from oceans, volcanic eruptions, hydrogen sulfides from natural sources, etc. Large amount of gases and ash from volcanic eruptions blacken the skies and increase the background pollution levels for years.
[4] Black soil is also known by which of the following name?
A.
Khadar Soil
B.
Bangar Soil
C.
Alluivial Soil
D.
Regur soil
Ans:
Regur soil
Explanation :
Black soils are often referred to as regur but are popularly known as "black cotton soils," since cotton has been the most common traditional crop in areas where they are found. Black soils are derivatives of trap lava and are spread mostly across interior Gujarat, Maharashtra, Karnataka, and Madhya Pradesh on the Deccan lava plateau and the Malwa Plateau.
[5] Salination of soil is caused by –
A.
pesticides
B.
soil erosion
C.
excess irrigation
D.
crop rotation
Ans:
excess irrigation
Explanation :
Soil salinity is the salt content in the soil: the process of increasing the salt content is known as salinization. Excess irrigation leads to increase in soli salinity since water is absorbed by plants and salts are left behind in the soil and eventually begin to accumulate. Salination from irrigation water is also greatly increased by poor drainage and use of saline water for irrigating agricultural crops.
[6] A stretch of sea water, partly or fully separated by a narrow strip from the main sea is called –
A.
Bay
B.
Isthmus
C.
Lagoon
D.
Strait
Ans:
Lagoon
Explanation :
Lagoon is a shallow stretch of water which is partly or completely separated from the sea by a narrow strip of land. In the case of coral reef, it is a channel of sea water between the reef and the main land. Lagoons are common coastal features around many parts of the world.
[7] The organic matter present in soil is known collectively as –
A.
Hydrocarbons
B.
Podsols
C.
Humus
D.
Colloids
Ans:
Humus
Explanation :
The organic matter present in soil is known collectively as humus. Humus is fully decomposed and finely divided organic matter. Dune is a hill or ridge of sand accumulated and sorted by wind action.
[8] Neap tides are –
A.
Strong
B.
Weak
C.
Medium
D.
Very strong
Ans:
Weak
Explanation :
Neap tides are especially weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Neap tides occur during quarter moons.
[9] The Ocean with the largest surface area is –
A.
Arctic Ocean
B.
Atlantic Ocean
C.
Indian Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
At 165.25 million square kilometers in area, the Pacific Ocean is the largest division of the World Ocean - and, in turn, the hydrosphere. It covers about 46% of the Earth's water surface and about one-third of its total surface area, making it larger than all of the Earth's land area combined.
[10] The Mediterranean region are characterized by heavy rain in:
A.
Winter
B.
Spring
C.
Autumn
D.
Summer
Ans:
Winter
Explanation :
During summer season, regions of Mediterranean climate are dominated by subtropical high pressure cells, making rainfall impossible or unlikely except for the occasional thunderstorm. During winter the polar jet stream and associated periodic storms bring heavy rain. Precipitation is heavier during the colder months.
[11] The highest grade and best quality coal is –
A.
Lignite
B.
Peat
C.
Bituminous
D.
Anthracite
Ans:
Anthracite
Explanation :
Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy luster, and is denser and blacker with few impurities. It is largely used for heating domestically as it burns with little smoke.
[12] The main source of usable water on the Earth is –
A.
Oceans
B.
Rivers
C.
Underground water
D.
Precipitation
Ans:
Underground water
Explanation :
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven percent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated. Two percent of our water is "locked up" in ice caps and glaciers, leaving only one percent as usable fresh water. Groundwater compiises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
[13] Which of the following rivers lies in a rift valley?
A.
Luni
B.
Chambal
C.
Sone
D.
Tapti
Ans:
Tapti
Explanation :
There are three Peninsular rivers which flow in a rift valley. Narmada flows westward between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between, different ranges.
[14] 'Flash floods' are associated with –
A.
Thunderstorms
B.
Cyclonic storms
C.
Tsunami
D.
Tornado
Ans:
Cyclonic storms
Explanation :
A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
[15] Tundras are –
A.
Deciduous forests
B.
Tropical rain forests
C.
Cold deserts
D.
Hot deserts
Ans:
Cold deserts
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. As water from rain, flooding, or other sources seeps into the ground, it can dissolve chemicals and carry them into the underground water supply. Mineral nutrients lost from the soil system become unavailable for plant uptake.
[2] Tropical rain forest is characterised by –
A.
Absence of trees
B.
Least productivity
C.
Maximum biodiversity
D.
Minimum biodiversity
Ans:
Maximum biodiversity
Explanation :
Tropical rainforests exhibit high levels of biodiversity. Around 40% to 75% of all biotic species are indigenous to the rainforests. Rainforests are home to half of all the living animal and plant species on the planet. Two-thirds of all flowering plants can be found in rainforests.
[3] Natural sources of air pollution are –
A.
Forest fires
B.
Volcanic eruptions
C.
Dust storm
D.
Smoke from burning dry leaves
Ans:
Volcanic eruptions
Explanation :
Some of the natural sources of air pollution are ground dust, salt spray from oceans, volcanic eruptions, hydrogen sulfides from natural sources, etc. Large amount of gases and ash from volcanic eruptions blacken the skies and increase the background pollution levels for years.
[4] Black soil is also known by which of the following name?
A.
Khadar Soil
B.
Bangar Soil
C.
Alluivial Soil
D.
Regur soil
Ans:
Regur soil
Explanation :
Black soils are often referred to as regur but are popularly known as "black cotton soils," since cotton has been the most common traditional crop in areas where they are found. Black soils are derivatives of trap lava and are spread mostly across interior Gujarat, Maharashtra, Karnataka, and Madhya Pradesh on the Deccan lava plateau and the Malwa Plateau.
[5] Salination of soil is caused by –
A.
pesticides
B.
soil erosion
C.
excess irrigation
D.
crop rotation
Ans:
excess irrigation
Explanation :
Soil salinity is the salt content in the soil: the process of increasing the salt content is known as salinization. Excess irrigation leads to increase in soli salinity since water is absorbed by plants and salts are left behind in the soil and eventually begin to accumulate. Salination from irrigation water is also greatly increased by poor drainage and use of saline water for irrigating agricultural crops.
[6] A stretch of sea water, partly or fully separated by a narrow strip from the main sea is called –
A.
Bay
B.
Isthmus
C.
Lagoon
D.
Strait
Ans:
Lagoon
Explanation :
Lagoon is a shallow stretch of water which is partly or completely separated from the sea by a narrow strip of land. In the case of coral reef, it is a channel of sea water between the reef and the main land. Lagoons are common coastal features around many parts of the world.
[7] The organic matter present in soil is known collectively as –
A.
Hydrocarbons
B.
Podsols
C.
Humus
D.
Colloids
Ans:
Humus
Explanation :
The organic matter present in soil is known collectively as humus. Humus is fully decomposed and finely divided organic matter. Dune is a hill or ridge of sand accumulated and sorted by wind action.
[8] Neap tides are –
A.
Strong
B.
Weak
C.
Medium
D.
Very strong
Ans:
Weak
Explanation :
Neap tides are especially weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Neap tides occur during quarter moons.
[9] The Ocean with the largest surface area is –
A.
Arctic Ocean
B.
Atlantic Ocean
C.
Indian Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
At 165.25 million square kilometers in area, the Pacific Ocean is the largest division of the World Ocean - and, in turn, the hydrosphere. It covers about 46% of the Earth's water surface and about one-third of its total surface area, making it larger than all of the Earth's land area combined.
[10] The Mediterranean region are characterized by heavy rain in:
A.
Winter
B.
Spring
C.
Autumn
D.
Summer
Ans:
Winter
Explanation :
During summer season, regions of Mediterranean climate are dominated by subtropical high pressure cells, making rainfall impossible or unlikely except for the occasional thunderstorm. During winter the polar jet stream and associated periodic storms bring heavy rain. Precipitation is heavier during the colder months.
[11] The highest grade and best quality coal is –
A.
Lignite
B.
Peat
C.
Bituminous
D.
Anthracite
Ans:
Anthracite
Explanation :
Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy luster, and is denser and blacker with few impurities. It is largely used for heating domestically as it burns with little smoke.
[12] The main source of usable water on the Earth is –
A.
Oceans
B.
Rivers
C.
Underground water
D.
Precipitation
Ans:
Underground water
Explanation :
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven percent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated. Two percent of our water is "locked up" in ice caps and glaciers, leaving only one percent as usable fresh water. Groundwater compiises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
[13] Which of the following rivers lies in a rift valley?
A.
Luni
B.
Chambal
C.
Sone
D.
Tapti
Ans:
Tapti
Explanation :
There are three Peninsular rivers which flow in a rift valley. Narmada flows westward between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between, different ranges.
[14] 'Flash floods' are associated with –
A.
Thunderstorms
B.
Cyclonic storms
C.
Tsunami
D.
Tornado
Ans:
Cyclonic storms
Explanation :
A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
[15] Tundras are –
A.
Deciduous forests
B.
Tropical rain forests
C.
Cold deserts
D.
Hot deserts
Ans:
Cold deserts
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
Some of the natural sources of air pollution are ground dust, salt spray from oceans, volcanic eruptions, hydrogen sulfides from natural sources, etc. Large amount of gases and ash from volcanic eruptions blacken the skies and increase the background pollution levels for years.
[4] Black soil is also known by which of the following name?
A.
Khadar Soil
B.
Bangar Soil
C.
Alluivial Soil
D.
Regur soil
Ans:
Regur soil
Explanation :
Black soils are often referred to as regur but are popularly known as "black cotton soils," since cotton has been the most common traditional crop in areas where they are found. Black soils are derivatives of trap lava and are spread mostly across interior Gujarat, Maharashtra, Karnataka, and Madhya Pradesh on the Deccan lava plateau and the Malwa Plateau.
[5] Salination of soil is caused by –
A.
pesticides
B.
soil erosion
C.
excess irrigation
D.
crop rotation
Ans:
excess irrigation
Explanation :
Soil salinity is the salt content in the soil: the process of increasing the salt content is known as salinization. Excess irrigation leads to increase in soli salinity since water is absorbed by plants and salts are left behind in the soil and eventually begin to accumulate. Salination from irrigation water is also greatly increased by poor drainage and use of saline water for irrigating agricultural crops.
[6] A stretch of sea water, partly or fully separated by a narrow strip from the main sea is called –
A.
Bay
B.
Isthmus
C.
Lagoon
D.
Strait
Ans:
Lagoon
Explanation :
Lagoon is a shallow stretch of water which is partly or completely separated from the sea by a narrow strip of land. In the case of coral reef, it is a channel of sea water between the reef and the main land. Lagoons are common coastal features around many parts of the world.
[7] The organic matter present in soil is known collectively as –
A.
Hydrocarbons
B.
Podsols
C.
Humus
D.
Colloids
Ans:
Humus
Explanation :
The organic matter present in soil is known collectively as humus. Humus is fully decomposed and finely divided organic matter. Dune is a hill or ridge of sand accumulated and sorted by wind action.
[8] Neap tides are –
A.
Strong
B.
Weak
C.
Medium
D.
Very strong
Ans:
Weak
Explanation :
Neap tides are especially weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Neap tides occur during quarter moons.
[9] The Ocean with the largest surface area is –
A.
Arctic Ocean
B.
Atlantic Ocean
C.
Indian Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
At 165.25 million square kilometers in area, the Pacific Ocean is the largest division of the World Ocean - and, in turn, the hydrosphere. It covers about 46% of the Earth's water surface and about one-third of its total surface area, making it larger than all of the Earth's land area combined.
[10] The Mediterranean region are characterized by heavy rain in:
A.
Winter
B.
Spring
C.
Autumn
D.
Summer
Ans:
Winter
Explanation :
During summer season, regions of Mediterranean climate are dominated by subtropical high pressure cells, making rainfall impossible or unlikely except for the occasional thunderstorm. During winter the polar jet stream and associated periodic storms bring heavy rain. Precipitation is heavier during the colder months.
[11] The highest grade and best quality coal is –
A.
Lignite
B.
Peat
C.
Bituminous
D.
Anthracite
Ans:
Anthracite
Explanation :
Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy luster, and is denser and blacker with few impurities. It is largely used for heating domestically as it burns with little smoke.
[12] The main source of usable water on the Earth is –
A.
Oceans
B.
Rivers
C.
Underground water
D.
Precipitation
Ans:
Underground water
Explanation :
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven percent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated. Two percent of our water is "locked up" in ice caps and glaciers, leaving only one percent as usable fresh water. Groundwater compiises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
[13] Which of the following rivers lies in a rift valley?
A.
Luni
B.
Chambal
C.
Sone
D.
Tapti
Ans:
Tapti
Explanation :
There are three Peninsular rivers which flow in a rift valley. Narmada flows westward between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between, different ranges.
[14] 'Flash floods' are associated with –
A.
Thunderstorms
B.
Cyclonic storms
C.
Tsunami
D.
Tornado
Ans:
Cyclonic storms
Explanation :
A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
[15] Tundras are –
A.
Deciduous forests
B.
Tropical rain forests
C.
Cold deserts
D.
Hot deserts
Ans:
Cold deserts
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
Soil salinity is the salt content in the soil: the process of increasing the salt content is known as salinization. Excess irrigation leads to increase in soli salinity since water is absorbed by plants and salts are left behind in the soil and eventually begin to accumulate. Salination from irrigation water is also greatly increased by poor drainage and use of saline water for irrigating agricultural crops.
[6] A stretch of sea water, partly or fully separated by a narrow strip from the main sea is called –
A.
Bay
B.
Isthmus
C.
Lagoon
D.
Strait
Ans:
Lagoon
Explanation :
Lagoon is a shallow stretch of water which is partly or completely separated from the sea by a narrow strip of land. In the case of coral reef, it is a channel of sea water between the reef and the main land. Lagoons are common coastal features around many parts of the world.
[7] The organic matter present in soil is known collectively as –
A.
Hydrocarbons
B.
Podsols
C.
Humus
D.
Colloids
Ans:
Humus
Explanation :
The organic matter present in soil is known collectively as humus. Humus is fully decomposed and finely divided organic matter. Dune is a hill or ridge of sand accumulated and sorted by wind action.
[8] Neap tides are –
A.
Strong
B.
Weak
C.
Medium
D.
Very strong
Ans:
Weak
Explanation :
Neap tides are especially weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Neap tides occur during quarter moons.
[9] The Ocean with the largest surface area is –
A.
Arctic Ocean
B.
Atlantic Ocean
C.
Indian Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
At 165.25 million square kilometers in area, the Pacific Ocean is the largest division of the World Ocean - and, in turn, the hydrosphere. It covers about 46% of the Earth's water surface and about one-third of its total surface area, making it larger than all of the Earth's land area combined.
[10] The Mediterranean region are characterized by heavy rain in:
A.
Winter
B.
Spring
C.
Autumn
D.
Summer
Ans:
Winter
Explanation :
During summer season, regions of Mediterranean climate are dominated by subtropical high pressure cells, making rainfall impossible or unlikely except for the occasional thunderstorm. During winter the polar jet stream and associated periodic storms bring heavy rain. Precipitation is heavier during the colder months.
[11] The highest grade and best quality coal is –
A.
Lignite
B.
Peat
C.
Bituminous
D.
Anthracite
Ans:
Anthracite
Explanation :
Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy luster, and is denser and blacker with few impurities. It is largely used for heating domestically as it burns with little smoke.
[12] The main source of usable water on the Earth is –
A.
Oceans
B.
Rivers
C.
Underground water
D.
Precipitation
Ans:
Underground water
Explanation :
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven percent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated. Two percent of our water is "locked up" in ice caps and glaciers, leaving only one percent as usable fresh water. Groundwater compiises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
[13] Which of the following rivers lies in a rift valley?
A.
Luni
B.
Chambal
C.
Sone
D.
Tapti
Ans:
Tapti
Explanation :
There are three Peninsular rivers which flow in a rift valley. Narmada flows westward between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between, different ranges.
[14] 'Flash floods' are associated with –
A.
Thunderstorms
B.
Cyclonic storms
C.
Tsunami
D.
Tornado
Ans:
Cyclonic storms
Explanation :
A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
[15] Tundras are –
A.
Deciduous forests
B.
Tropical rain forests
C.
Cold deserts
D.
Hot deserts
Ans:
Cold deserts
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
The organic matter present in soil is known collectively as humus. Humus is fully decomposed and finely divided organic matter. Dune is a hill or ridge of sand accumulated and sorted by wind action.
[8] Neap tides are –
A.
Strong
B.
Weak
C.
Medium
D.
Very strong
Ans:
Weak
Explanation :
Neap tides are especially weak tides. They occur when the gravitational forces of the Moon and the Sun are perpendicular to one another (with respect to the Earth). Neap tides occur during quarter moons.
[9] The Ocean with the largest surface area is –
A.
Arctic Ocean
B.
Atlantic Ocean
C.
Indian Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
At 165.25 million square kilometers in area, the Pacific Ocean is the largest division of the World Ocean - and, in turn, the hydrosphere. It covers about 46% of the Earth's water surface and about one-third of its total surface area, making it larger than all of the Earth's land area combined.
[10] The Mediterranean region are characterized by heavy rain in:
A.
Winter
B.
Spring
C.
Autumn
D.
Summer
Ans:
Winter
Explanation :
During summer season, regions of Mediterranean climate are dominated by subtropical high pressure cells, making rainfall impossible or unlikely except for the occasional thunderstorm. During winter the polar jet stream and associated periodic storms bring heavy rain. Precipitation is heavier during the colder months.
[11] The highest grade and best quality coal is –
A.
Lignite
B.
Peat
C.
Bituminous
D.
Anthracite
Ans:
Anthracite
Explanation :
Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy luster, and is denser and blacker with few impurities. It is largely used for heating domestically as it burns with little smoke.
[12] The main source of usable water on the Earth is –
A.
Oceans
B.
Rivers
C.
Underground water
D.
Precipitation
Ans:
Underground water
Explanation :
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven percent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated. Two percent of our water is "locked up" in ice caps and glaciers, leaving only one percent as usable fresh water. Groundwater compiises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
[13] Which of the following rivers lies in a rift valley?
A.
Luni
B.
Chambal
C.
Sone
D.
Tapti
Ans:
Tapti
Explanation :
There are three Peninsular rivers which flow in a rift valley. Narmada flows westward between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between, different ranges.
[14] 'Flash floods' are associated with –
A.
Thunderstorms
B.
Cyclonic storms
C.
Tsunami
D.
Tornado
Ans:
Cyclonic storms
Explanation :
A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
[15] Tundras are –
A.
Deciduous forests
B.
Tropical rain forests
C.
Cold deserts
D.
Hot deserts
Ans:
Cold deserts
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
At 165.25 million square kilometers in area, the Pacific Ocean is the largest division of the World Ocean - and, in turn, the hydrosphere. It covers about 46% of the Earth's water surface and about one-third of its total surface area, making it larger than all of the Earth's land area combined.
[10] The Mediterranean region are characterized by heavy rain in:
A.
Winter
B.
Spring
C.
Autumn
D.
Summer
Ans:
Winter
Explanation :
During summer season, regions of Mediterranean climate are dominated by subtropical high pressure cells, making rainfall impossible or unlikely except for the occasional thunderstorm. During winter the polar jet stream and associated periodic storms bring heavy rain. Precipitation is heavier during the colder months.
[11] The highest grade and best quality coal is –
A.
Lignite
B.
Peat
C.
Bituminous
D.
Anthracite
Ans:
Anthracite
Explanation :
Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy luster, and is denser and blacker with few impurities. It is largely used for heating domestically as it burns with little smoke.
[12] The main source of usable water on the Earth is –
A.
Oceans
B.
Rivers
C.
Underground water
D.
Precipitation
Ans:
Underground water
Explanation :
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven percent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated. Two percent of our water is "locked up" in ice caps and glaciers, leaving only one percent as usable fresh water. Groundwater compiises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
[13] Which of the following rivers lies in a rift valley?
A.
Luni
B.
Chambal
C.
Sone
D.
Tapti
Ans:
Tapti
Explanation :
There are three Peninsular rivers which flow in a rift valley. Narmada flows westward between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between, different ranges.
[14] 'Flash floods' are associated with –
A.
Thunderstorms
B.
Cyclonic storms
C.
Tsunami
D.
Tornado
Ans:
Cyclonic storms
Explanation :
A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
[15] Tundras are –
A.
Deciduous forests
B.
Tropical rain forests
C.
Cold deserts
D.
Hot deserts
Ans:
Cold deserts
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
Anthracite is usually considered to be the highest grade of coal and is actually considered to be metamorphic. Compared to other coals it is much harder, has a glassy luster, and is denser and blacker with few impurities. It is largely used for heating domestically as it burns with little smoke.
[12] The main source of usable water on the Earth is –
A.
Oceans
B.
Rivers
C.
Underground water
D.
Precipitation
Ans:
Underground water
Explanation :
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven percent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated. Two percent of our water is "locked up" in ice caps and glaciers, leaving only one percent as usable fresh water. Groundwater compiises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
[13] Which of the following rivers lies in a rift valley?
A.
Luni
B.
Chambal
C.
Sone
D.
Tapti
Ans:
Tapti
Explanation :
There are three Peninsular rivers which flow in a rift valley. Narmada flows westward between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between, different ranges.
[14] 'Flash floods' are associated with –
A.
Thunderstorms
B.
Cyclonic storms
C.
Tsunami
D.
Tornado
Ans:
Cyclonic storms
Explanation :
A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
[15] Tundras are –
A.
Deciduous forests
B.
Tropical rain forests
C.
Cold deserts
D.
Hot deserts
Ans:
Cold deserts
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
There are three Peninsular rivers which flow in a rift valley. Narmada flows westward between the Satpura and Vindhya ranges. The Tapti River and Mahi River also flow through rift valleys, but between, different ranges.
[14] 'Flash floods' are associated with –
A.
Thunderstorms
B.
Cyclonic storms
C.
Tsunami
D.
Tornado
Ans:
Cyclonic storms
Explanation :
A flash flood is a rapid flooding of geomorphic low-lying areas: washes, rivers, dry lakes and basins. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, tropical storm or cyclone, or melt-water from ice or snow flowing over ice sheets or snowfields.
[15] Tundras are –
A.
Deciduous forests
B.
Tropical rain forests
C.
Cold deserts
D.
Hot deserts
Ans:
Cold deserts
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
evapotranspiration is extremely low, allowing soggy terrain of swamps and bogs even in places that get precipitation typical of deserts of lower and middle latitudes.
[16] Hydraulic Action is a type of erosion caused by –
A.
Running water
B.
Wind
C.
Glacier
D.
None of these
Ans:
Running water
Explanation :
Hydraulic action is one of the main forms of river erosion (example, of erosion due to running water) in which the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure weakens the banks and gradually wears it away.
[17] Which of the following is the newest geological era?
A.
Permian
B.
Triassic
C.
Cretaceous
D.
Jurassic
Ans:
Cretaceous
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
[18] The largest forest which covers 25 percent of the world's forest land is :
A.
The Tropical Rain forest
B.
Taiga forest of Siberia
C.
Monsoon forest
D.
Temperate forests of Europe
Ans:
Taiga forest of Siberia
Explanation :
Taiga is the world's largest land biome. It makes up 29% of the world's forest cover. Also known as boreal forest or snow forest, it is characterized by coniferous forests consisting mostly of pines, spruces and larches. The largest areas of Taiga are located in Russia and Canada.
[19] Which of the following is called the twin of the earth?
A.
Neptune
B.
Venus
C.
Mars
D.
Saturn
Ans:
Venus
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
Venus is the second planet from the sun and a close neighbor to the earth. It was named after the Roman Goddess of Beauty. Venus is usually one the brightest objects in the sky, which might be the reason it got its name. It is quite similar to the planet earth mainly in its size and a few other characteristics which is why it is often considered the Earth's twin. However, surface conditions are not nearly the same making it a quite inhospitable environment.
[20] Which amidst the following planets has its orbit closest to Sun?
A.
Venus
B.
Mars
C.
Jupiter
D.
Uranus
Ans:
Venus
Explanation :
Venus is the brightest planet in our sky and can sometimes be seen with the naked eye if we know where to look. It is the solar system's brightest planet — yellow clouds of sulfuric acid reflect the sun's light brightly and has its orbit closest to sun but only next to mercury.
[21] The outermost layer of the Sun is called –
A.
Chromosphere
B.
Photosphere
C.
Corona
D.
Lithosphere
Ans:
Corona
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
The outermost layer of the sun is the corona. Only visible during eclipses, it is a low density cloud of plasma with higher transparency than the inner layers. The white corona is a million times less bright than the inner layers of the sun, but is many times larger. A corona is a type of plasma "atmosphere" of the Sun or other celestial body, extending millions of kilometers into space, most easily seen during a total solar eclipse, but also observable in a coronagraph.
[22] Which planet is called evening star?
A.
Mars
B.
Mercury
C.
Venus
D.
Jupiter
Ans:
Venus
Explanation :
Venus "overtakes" the Earth every 584 days as it orbits the Sun. As it does so, it changes from the Evening Star, visible after sunset, to the "Morning Star", visible before sunrise.
[23] Light from the Sun reaches us in nearly –
A.
8 min
B.
2 min
C.
6 min
D.
4 min
Ans:
8 min
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
The sun's light takes about 8 minutes to reach the Earth after it has been emitted from the sun's surface. The time it takes for light to reach planets in our Solar System varies from about 3 minutes for Mercury, to about 5.3 hours for Pluto.
[24] The disconnected lines drawn on a map for showing slope-
A.
Bench marks
B.
Contours
C.
Form lines
D.
Hachure
Ans:
Hachure
Explanation :
Hachures are short disconnected lines drawn on the map to depict the slope of the ground surface. They are drawn in rows; each row being disconnected from the other. They are short and closely spaced for steep slopes and relatively long and widely spaced for gentler slopes. Hachures are not drawn for leveled areas, such as flat valley or a plateau top.
[25] If a star is bigger than Sun, but not more than twice as big, it will turn into a .
A.
Pulsar
B.
Maxima
C.
Avenger
D.
Discover
Ans:
Pulsar
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.
Explanation :
If the star is about the mass of the Sun or less than that, it will turn into White Dwarfs. If the star is bigger than the Sun but not more than twice as big, it will turn into a Neutron Star or Pulsar. If the star is many times bigger than the Sun, it will turn into what is called a Black Hole.