[1] Most of the ozone in the earth's atmosphere is found in the:
A.
Troposphere
B.
Stratosphere
C.
Mesophere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Most ozone (about 90%) resides in a layer that begins between 10 and 17 kilometers above the Earth's surface and extends up to about 50 kilometers. This region of the atmosphere is called the strato- sphere. The ozone layer absorbs most of the Sun's ultraviolet (UV) radiation.
[2] How much of world's surface is covered by water?
A.
0.55
B.
0.7
C.
0.8
D.
0.25
Ans:
0.7
Explanation :
Water makes up 70.8% of the Earth's surface, while the other 29% consists of continents and Islands. To break the numbers down, 96.5% of all the Earth's water is contained within the oceans as salt water, while the remaining 3.5% is freshwater lakes and frozen water locked up in glaciers and the polar ice caps.
[3] The largest reservoir of fresh water is :
A.
Glaciers
B.
Ground Water
C.
Ponds
D.
Lakes
Ans:
Glaciers
Explanation :
The largest water reservoir is the ocean, containing 97.3% of all water on Earth. Only 2.8 % of all the water on Planet Earth is fresh water. Three-quarters of all fresh water on Earth is frozen in glacier ice. So glacier ice is the second largest reservoir of water on Earth and the largest reservoir of fresh water on Earth!
[4] Soil factors are otherwise known as :
A.
Edaphic factors
B.
Biotic factors
C.
Physiographic factors
D.
Climatic factors
Ans:
Edaphic factors
Explanation :
Edaphic is a nature related to soil. Edaphic qualities may characterize the soil itself, including drain-age, texture, or chemical properties such as pH. Edaphic may also characterize organisms, such as plant communities, where it specifies their relationships with soil.
[5] Highly specialized form of agriculture in which crops like coffee, tea and rubber are cultivated refer to –
A.
multiple cropping
B.
plantation agriculture
C.
terrace farming
D.
extensive farming
Ans:
plantation agriculture
Explanation :
Plantation agriculture is a form of commercial farming where crops are grown for profit. Usually, only one type of crop is grown in a plantation. Common examples include rubber, coffee, tea, bananas, sugar cane, oil palm, cocoa and tobacco.
[6] Which of the following metals contribute to to biomagnifications problem in the ecosystem?
A.
Mercury
B.
Chromium
C.
(4) Copper
D.
Lead
Ans:
Mercury
Explanation :
Mercury causes biomagnification problem in the ecosystem.
[7] What is the percentage coverage of Tropical Forest on earth's landmass?
A.
7
B.
12
C.
17
D.
25
Ans:
7
Explanation :
Although tropical forests cover less than 7% of the earth's surface they are home to approximately 50% of all living things on earth.
[8] Which of the following phenomena is supposedly associated with global warming?
A.
El Nino
B.
La Nina
C.
El Nino Modoki
D.
Southern Oscillation
Ans:
El Nino
Explanation :
El Nino is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Nino events have triggered warmer than usual temperatures over the Indian Ocean.
[9] What is the alternate name for contour lines?
A.
Isopotential
B.
Istherm
C.
Isohypse
D.
Isohyet
Ans:
Isohypse
Explanation :
Isohypse is a line on a map that joins points of equal elevation. It is also known as contour line.
[10] The fur of the animals living in colder regions –
A.
protects them from water
B.
traps the air and keeps them warm
C.
protects them from enemies
D.
makes them appear beautiful
Ans:
traps the air and keeps them warm
Explanation :
The fur of the animals living in colder regions traps the air and keeps them warm.
[11] The largest ocean is –
A.
Atlantic Ocean
B.
Indian Ocean
C.
Arctic Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east. This largest division of the World Ocean - and, in turn, the hydrosphere - 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.
[12] Which from the following can cause a tsunami?
A.
Volcano
B.
Avalanche
C.
Tornado
D.
Earthquake
Ans:
Earthquake
Explanation :
Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the subducting plate and the overriding plate is enormous.
[13] Which of the following phenomena is supposedly associated with global warming?
A.
Southern Oscillations
B.
El Nino
C.
La Nino
D.
El Nino Modiki
Ans:
El Nino Modiki
Explanation :
El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.
[14] Identify the most infertile amongst the following soils.
A.
Black cotton soil
B.
Alluvial soil
C.
Laterite soil
D.
Peaty soil
Ans:
Laterite soil
Explanation :
Lateritic soils are the most weathered and infertile of all soil types. Due to intensive leaching and low base-exchange capacity, typical lateritic soils are generally infertile and of little value for crop production (Geography of India by Srntta Sengupta, p 63).
[15] Which one of the following pairs is not correctly matched?
A.
lchadar - Zonal soil
B.
Podzol - Zonal soil
C.
Chestnut - Zonal soil
D.
Bhangar - Azonal soil
Ans:
lchadar - Zonal soil
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
Most ozone (about 90%) resides in a layer that begins between 10 and 17 kilometers above the Earth's surface and extends up to about 50 kilometers. This region of the atmosphere is called the strato- sphere. The ozone layer absorbs most of the Sun's ultraviolet (UV) radiation.
[2] How much of world's surface is covered by water?
A.
0.55
B.
0.7
C.
0.8
D.
0.25
Ans:
0.7
Explanation :
Water makes up 70.8% of the Earth's surface, while the other 29% consists of continents and Islands. To break the numbers down, 96.5% of all the Earth's water is contained within the oceans as salt water, while the remaining 3.5% is freshwater lakes and frozen water locked up in glaciers and the polar ice caps.
[3] The largest reservoir of fresh water is :
A.
Glaciers
B.
Ground Water
C.
Ponds
D.
Lakes
Ans:
Glaciers
Explanation :
The largest water reservoir is the ocean, containing 97.3% of all water on Earth. Only 2.8 % of all the water on Planet Earth is fresh water. Three-quarters of all fresh water on Earth is frozen in glacier ice. So glacier ice is the second largest reservoir of water on Earth and the largest reservoir of fresh water on Earth!
[4] Soil factors are otherwise known as :
A.
Edaphic factors
B.
Biotic factors
C.
Physiographic factors
D.
Climatic factors
Ans:
Edaphic factors
Explanation :
Edaphic is a nature related to soil. Edaphic qualities may characterize the soil itself, including drain-age, texture, or chemical properties such as pH. Edaphic may also characterize organisms, such as plant communities, where it specifies their relationships with soil.
[5] Highly specialized form of agriculture in which crops like coffee, tea and rubber are cultivated refer to –
A.
multiple cropping
B.
plantation agriculture
C.
terrace farming
D.
extensive farming
Ans:
plantation agriculture
Explanation :
Plantation agriculture is a form of commercial farming where crops are grown for profit. Usually, only one type of crop is grown in a plantation. Common examples include rubber, coffee, tea, bananas, sugar cane, oil palm, cocoa and tobacco.
[6] Which of the following metals contribute to to biomagnifications problem in the ecosystem?
A.
Mercury
B.
Chromium
C.
(4) Copper
D.
Lead
Ans:
Mercury
Explanation :
Mercury causes biomagnification problem in the ecosystem.
[7] What is the percentage coverage of Tropical Forest on earth's landmass?
A.
7
B.
12
C.
17
D.
25
Ans:
7
Explanation :
Although tropical forests cover less than 7% of the earth's surface they are home to approximately 50% of all living things on earth.
[8] Which of the following phenomena is supposedly associated with global warming?
A.
El Nino
B.
La Nina
C.
El Nino Modoki
D.
Southern Oscillation
Ans:
El Nino
Explanation :
El Nino is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Nino events have triggered warmer than usual temperatures over the Indian Ocean.
[9] What is the alternate name for contour lines?
A.
Isopotential
B.
Istherm
C.
Isohypse
D.
Isohyet
Ans:
Isohypse
Explanation :
Isohypse is a line on a map that joins points of equal elevation. It is also known as contour line.
[10] The fur of the animals living in colder regions –
A.
protects them from water
B.
traps the air and keeps them warm
C.
protects them from enemies
D.
makes them appear beautiful
Ans:
traps the air and keeps them warm
Explanation :
The fur of the animals living in colder regions traps the air and keeps them warm.
[11] The largest ocean is –
A.
Atlantic Ocean
B.
Indian Ocean
C.
Arctic Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east. This largest division of the World Ocean - and, in turn, the hydrosphere - 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.
[12] Which from the following can cause a tsunami?
A.
Volcano
B.
Avalanche
C.
Tornado
D.
Earthquake
Ans:
Earthquake
Explanation :
Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the subducting plate and the overriding plate is enormous.
[13] Which of the following phenomena is supposedly associated with global warming?
A.
Southern Oscillations
B.
El Nino
C.
La Nino
D.
El Nino Modiki
Ans:
El Nino Modiki
Explanation :
El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.
[14] Identify the most infertile amongst the following soils.
A.
Black cotton soil
B.
Alluvial soil
C.
Laterite soil
D.
Peaty soil
Ans:
Laterite soil
Explanation :
Lateritic soils are the most weathered and infertile of all soil types. Due to intensive leaching and low base-exchange capacity, typical lateritic soils are generally infertile and of little value for crop production (Geography of India by Srntta Sengupta, p 63).
[15] Which one of the following pairs is not correctly matched?
A.
lchadar - Zonal soil
B.
Podzol - Zonal soil
C.
Chestnut - Zonal soil
D.
Bhangar - Azonal soil
Ans:
lchadar - Zonal soil
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
The largest water reservoir is the ocean, containing 97.3% of all water on Earth. Only 2.8 % of all the water on Planet Earth is fresh water. Three-quarters of all fresh water on Earth is frozen in glacier ice. So glacier ice is the second largest reservoir of water on Earth and the largest reservoir of fresh water on Earth!
[4] Soil factors are otherwise known as :
A.
Edaphic factors
B.
Biotic factors
C.
Physiographic factors
D.
Climatic factors
Ans:
Edaphic factors
Explanation :
Edaphic is a nature related to soil. Edaphic qualities may characterize the soil itself, including drain-age, texture, or chemical properties such as pH. Edaphic may also characterize organisms, such as plant communities, where it specifies their relationships with soil.
[5] Highly specialized form of agriculture in which crops like coffee, tea and rubber are cultivated refer to –
A.
multiple cropping
B.
plantation agriculture
C.
terrace farming
D.
extensive farming
Ans:
plantation agriculture
Explanation :
Plantation agriculture is a form of commercial farming where crops are grown for profit. Usually, only one type of crop is grown in a plantation. Common examples include rubber, coffee, tea, bananas, sugar cane, oil palm, cocoa and tobacco.
[6] Which of the following metals contribute to to biomagnifications problem in the ecosystem?
A.
Mercury
B.
Chromium
C.
(4) Copper
D.
Lead
Ans:
Mercury
Explanation :
Mercury causes biomagnification problem in the ecosystem.
[7] What is the percentage coverage of Tropical Forest on earth's landmass?
A.
7
B.
12
C.
17
D.
25
Ans:
7
Explanation :
Although tropical forests cover less than 7% of the earth's surface they are home to approximately 50% of all living things on earth.
[8] Which of the following phenomena is supposedly associated with global warming?
A.
El Nino
B.
La Nina
C.
El Nino Modoki
D.
Southern Oscillation
Ans:
El Nino
Explanation :
El Nino is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Nino events have triggered warmer than usual temperatures over the Indian Ocean.
[9] What is the alternate name for contour lines?
A.
Isopotential
B.
Istherm
C.
Isohypse
D.
Isohyet
Ans:
Isohypse
Explanation :
Isohypse is a line on a map that joins points of equal elevation. It is also known as contour line.
[10] The fur of the animals living in colder regions –
A.
protects them from water
B.
traps the air and keeps them warm
C.
protects them from enemies
D.
makes them appear beautiful
Ans:
traps the air and keeps them warm
Explanation :
The fur of the animals living in colder regions traps the air and keeps them warm.
[11] The largest ocean is –
A.
Atlantic Ocean
B.
Indian Ocean
C.
Arctic Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east. This largest division of the World Ocean - and, in turn, the hydrosphere - 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.
[12] Which from the following can cause a tsunami?
A.
Volcano
B.
Avalanche
C.
Tornado
D.
Earthquake
Ans:
Earthquake
Explanation :
Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the subducting plate and the overriding plate is enormous.
[13] Which of the following phenomena is supposedly associated with global warming?
A.
Southern Oscillations
B.
El Nino
C.
La Nino
D.
El Nino Modiki
Ans:
El Nino Modiki
Explanation :
El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.
[14] Identify the most infertile amongst the following soils.
A.
Black cotton soil
B.
Alluvial soil
C.
Laterite soil
D.
Peaty soil
Ans:
Laterite soil
Explanation :
Lateritic soils are the most weathered and infertile of all soil types. Due to intensive leaching and low base-exchange capacity, typical lateritic soils are generally infertile and of little value for crop production (Geography of India by Srntta Sengupta, p 63).
[15] Which one of the following pairs is not correctly matched?
A.
lchadar - Zonal soil
B.
Podzol - Zonal soil
C.
Chestnut - Zonal soil
D.
Bhangar - Azonal soil
Ans:
lchadar - Zonal soil
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
Plantation agriculture is a form of commercial farming where crops are grown for profit. Usually, only one type of crop is grown in a plantation. Common examples include rubber, coffee, tea, bananas, sugar cane, oil palm, cocoa and tobacco.
[6] Which of the following metals contribute to to biomagnifications problem in the ecosystem?
A.
Mercury
B.
Chromium
C.
(4) Copper
D.
Lead
Ans:
Mercury
Explanation :
Mercury causes biomagnification problem in the ecosystem.
[7] What is the percentage coverage of Tropical Forest on earth's landmass?
A.
7
B.
12
C.
17
D.
25
Ans:
7
Explanation :
Although tropical forests cover less than 7% of the earth's surface they are home to approximately 50% of all living things on earth.
[8] Which of the following phenomena is supposedly associated with global warming?
A.
El Nino
B.
La Nina
C.
El Nino Modoki
D.
Southern Oscillation
Ans:
El Nino
Explanation :
El Nino is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Nino events have triggered warmer than usual temperatures over the Indian Ocean.
[9] What is the alternate name for contour lines?
A.
Isopotential
B.
Istherm
C.
Isohypse
D.
Isohyet
Ans:
Isohypse
Explanation :
Isohypse is a line on a map that joins points of equal elevation. It is also known as contour line.
[10] The fur of the animals living in colder regions –
A.
protects them from water
B.
traps the air and keeps them warm
C.
protects them from enemies
D.
makes them appear beautiful
Ans:
traps the air and keeps them warm
Explanation :
The fur of the animals living in colder regions traps the air and keeps them warm.
[11] The largest ocean is –
A.
Atlantic Ocean
B.
Indian Ocean
C.
Arctic Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east. This largest division of the World Ocean - and, in turn, the hydrosphere - 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.
[12] Which from the following can cause a tsunami?
A.
Volcano
B.
Avalanche
C.
Tornado
D.
Earthquake
Ans:
Earthquake
Explanation :
Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the subducting plate and the overriding plate is enormous.
[13] Which of the following phenomena is supposedly associated with global warming?
A.
Southern Oscillations
B.
El Nino
C.
La Nino
D.
El Nino Modiki
Ans:
El Nino Modiki
Explanation :
El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.
[14] Identify the most infertile amongst the following soils.
A.
Black cotton soil
B.
Alluvial soil
C.
Laterite soil
D.
Peaty soil
Ans:
Laterite soil
Explanation :
Lateritic soils are the most weathered and infertile of all soil types. Due to intensive leaching and low base-exchange capacity, typical lateritic soils are generally infertile and of little value for crop production (Geography of India by Srntta Sengupta, p 63).
[15] Which one of the following pairs is not correctly matched?
A.
lchadar - Zonal soil
B.
Podzol - Zonal soil
C.
Chestnut - Zonal soil
D.
Bhangar - Azonal soil
Ans:
lchadar - Zonal soil
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
Although tropical forests cover less than 7% of the earth's surface they are home to approximately 50% of all living things on earth.
[8] Which of the following phenomena is supposedly associated with global warming?
A.
El Nino
B.
La Nina
C.
El Nino Modoki
D.
Southern Oscillation
Ans:
El Nino
Explanation :
El Nino is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Nino events have triggered warmer than usual temperatures over the Indian Ocean.
[9] What is the alternate name for contour lines?
A.
Isopotential
B.
Istherm
C.
Isohypse
D.
Isohyet
Ans:
Isohypse
Explanation :
Isohypse is a line on a map that joins points of equal elevation. It is also known as contour line.
[10] The fur of the animals living in colder regions –
A.
protects them from water
B.
traps the air and keeps them warm
C.
protects them from enemies
D.
makes them appear beautiful
Ans:
traps the air and keeps them warm
Explanation :
The fur of the animals living in colder regions traps the air and keeps them warm.
[11] The largest ocean is –
A.
Atlantic Ocean
B.
Indian Ocean
C.
Arctic Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east. This largest division of the World Ocean - and, in turn, the hydrosphere - 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.
[12] Which from the following can cause a tsunami?
A.
Volcano
B.
Avalanche
C.
Tornado
D.
Earthquake
Ans:
Earthquake
Explanation :
Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the subducting plate and the overriding plate is enormous.
[13] Which of the following phenomena is supposedly associated with global warming?
A.
Southern Oscillations
B.
El Nino
C.
La Nino
D.
El Nino Modiki
Ans:
El Nino Modiki
Explanation :
El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.
[14] Identify the most infertile amongst the following soils.
A.
Black cotton soil
B.
Alluvial soil
C.
Laterite soil
D.
Peaty soil
Ans:
Laterite soil
Explanation :
Lateritic soils are the most weathered and infertile of all soil types. Due to intensive leaching and low base-exchange capacity, typical lateritic soils are generally infertile and of little value for crop production (Geography of India by Srntta Sengupta, p 63).
[15] Which one of the following pairs is not correctly matched?
A.
lchadar - Zonal soil
B.
Podzol - Zonal soil
C.
Chestnut - Zonal soil
D.
Bhangar - Azonal soil
Ans:
lchadar - Zonal soil
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
Isohypse is a line on a map that joins points of equal elevation. It is also known as contour line.
[10] The fur of the animals living in colder regions –
A.
protects them from water
B.
traps the air and keeps them warm
C.
protects them from enemies
D.
makes them appear beautiful
Ans:
traps the air and keeps them warm
Explanation :
The fur of the animals living in colder regions traps the air and keeps them warm.
[11] The largest ocean is –
A.
Atlantic Ocean
B.
Indian Ocean
C.
Arctic Ocean
D.
Pacific Ocean
Ans:
Pacific Ocean
Explanation :
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east. This largest division of the World Ocean - and, in turn, the hydrosphere - 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.
[12] Which from the following can cause a tsunami?
A.
Volcano
B.
Avalanche
C.
Tornado
D.
Earthquake
Ans:
Earthquake
Explanation :
Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the subducting plate and the overriding plate is enormous.
[13] Which of the following phenomena is supposedly associated with global warming?
A.
Southern Oscillations
B.
El Nino
C.
La Nino
D.
El Nino Modiki
Ans:
El Nino Modiki
Explanation :
El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.
[14] Identify the most infertile amongst the following soils.
A.
Black cotton soil
B.
Alluvial soil
C.
Laterite soil
D.
Peaty soil
Ans:
Laterite soil
Explanation :
Lateritic soils are the most weathered and infertile of all soil types. Due to intensive leaching and low base-exchange capacity, typical lateritic soils are generally infertile and of little value for crop production (Geography of India by Srntta Sengupta, p 63).
[15] Which one of the following pairs is not correctly matched?
A.
lchadar - Zonal soil
B.
Podzol - Zonal soil
C.
Chestnut - Zonal soil
D.
Bhangar - Azonal soil
Ans:
lchadar - Zonal soil
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east. This largest division of the World Ocean - and, in turn, the hydrosphere - 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.
[12] Which from the following can cause a tsunami?
A.
Volcano
B.
Avalanche
C.
Tornado
D.
Earthquake
Ans:
Earthquake
Explanation :
Most tsunamis are caused by earthquakes generated in a subduction zone, an area where an oceanic plate is being forced down into the mantle by plate tectonic forces. The friction between the subducting plate and the overriding plate is enormous.
[13] Which of the following phenomena is supposedly associated with global warming?
A.
Southern Oscillations
B.
El Nino
C.
La Nino
D.
El Nino Modiki
Ans:
El Nino Modiki
Explanation :
El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.
[14] Identify the most infertile amongst the following soils.
A.
Black cotton soil
B.
Alluvial soil
C.
Laterite soil
D.
Peaty soil
Ans:
Laterite soil
Explanation :
Lateritic soils are the most weathered and infertile of all soil types. Due to intensive leaching and low base-exchange capacity, typical lateritic soils are generally infertile and of little value for crop production (Geography of India by Srntta Sengupta, p 63).
[15] Which one of the following pairs is not correctly matched?
A.
lchadar - Zonal soil
B.
Podzol - Zonal soil
C.
Chestnut - Zonal soil
D.
Bhangar - Azonal soil
Ans:
lchadar - Zonal soil
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean. Scientists have found association with El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature. For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.
[14] Identify the most infertile amongst the following soils.
A.
Black cotton soil
B.
Alluvial soil
C.
Laterite soil
D.
Peaty soil
Ans:
Laterite soil
Explanation :
Lateritic soils are the most weathered and infertile of all soil types. Due to intensive leaching and low base-exchange capacity, typical lateritic soils are generally infertile and of little value for crop production (Geography of India by Srntta Sengupta, p 63).
[15] Which one of the following pairs is not correctly matched?
A.
lchadar - Zonal soil
B.
Podzol - Zonal soil
C.
Chestnut - Zonal soil
D.
Bhangar - Azonal soil
Ans:
lchadar - Zonal soil
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
Alluvial soils (chadar and bhangar) are azonal soils. They form in transported and recently deposited materials. Azonal soils have a profile determined pre-dominantly by factors other than local climate and vegetation.
[16] A semi enclosed coastal body of water which has a free connection with the open sea is called –
A.
Estuary
B.
Fiord
C.
Cove
D.
Ria coast
Ans:
Estuary
Explanation :
An estuary is a semi-enclosed coastal body of water which has a free connection with the open sea and within which sea water is measurably diluted with fresh water derived from land drainage. Estuaries form a transition zone between river environments and maritime environments. They are subject both to marine and riverine influences.
[17] The 'EL Nino' phenomena which sparks climatic extreme around the globe, originates in the –
A.
Sea of China
B.
Pacific Ocean
C.
Indian Ocean
D.
Atlantic Ocean
Ans:
Pacific Ocean
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
El Nino (Little Boy, or Christ Child in Spanish) refers to the large-scale ocean-atmosphere climate interaction linked to a periodic warming in sea surface temperatures across the central and east-central Equatorial Pacific. It was originally recognized by fisher-men off the coast of South America in the 1600s, with the appearance of unusually warm water in the Pacific Ocean.
[18] Which of the following is the uppermost layer of the atmosphere?
A.
Stratosphere
B.
Mesosphere
C.
Ionosphere
D.
Exosphere
Ans:
Exosphere
Explanation :
The exosphere is the outermost layer of Earth's atmosphere. It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km where it merges into the solar wind. This layer is mainly composed of extremely low densities of hydrogen, helium and several heavier molecules. The exosphere is located too far above Earth for any meteorological phenomena to be possible.
[19] In which of the following layer of atmosphere the absorption and scattering of the solar ultraviolet radiation takes place?
A.
Troposphere
B.
Stratosphere
C.
Mesosphere
D.
Thermosphere
Ans:
Stratosphere
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth's atmosphere. The ozone layer, a region of Earth's stratosphere, absorbs 97-99% of the Sun's ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.
[20] The sphere of living matter together with water, air and soil on the surface of the earth is known as –
A.
Lithosphere
B.
Biosphere
C.
Hydrosphere
D.
Atmosphere
Ans:
Biosphere
Explanation :
Part of the Earth's surface and atmosphere that contains the entire terrestrial ecosystem, and extends from ocean depths to about six kilometers above sea level. Not precisely demarkable, it contains all living organisms and what supports them soil, subsurface water, bodies of water, air and includes hydrosphere and lithosphere.
[21] Which is a tropical food crop requiring a temperature of 270C and a rain fall more than 100 cm?
A.
Wheat
B.
Maize
C.
Rice
D.
Barley
Ans:
Rice
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and sub- tropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24°C.
[22] The narrow stretch of water connecting two Seas is called –
A.
Bay
B.
Peninsula
C.
Isthamus
D.
Strait
Ans:
Strait
Explanation :
A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses, but it may also refer to a navigable channel through a body of water that is otherwise not navigable, for example because it is too shallow, or because it contains an un-navigable reef or archipelago.
[23] The coastal part of water bodies of the oceans which is structurally part of the mainland of the continents is called –
A.
Isthumus
B.
oceanic ridge
C.
continental shelf
D.
continental slope
Ans:
continental shelf
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
The continental shelf is the extended perimeter of each continent and associated coastal plain. The shelf usually ends at a point of increasing slope (called the shelf break). The sea floor below the break is the continental slope.
[24] Ozone-hole in the atmosphere is largely caused by the presence of –
A.
Oxygen
B.
Hydrogen
C.
Chlorofluorocarbons
D.
Radio-active waste
Ans:
Chlorofluorocarbons
Explanation :
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. It is calculated that a CFC molecule takes an average of about five to seven years to go from the ground level up to the upper atmosphere, and it can stay there for about a century, destroying up to one hundred thousand ozone molecules during that time.
[25] The term Roaring Forties is related to the –
A.
Trade winds
B.
Planetary winds
C.
Westerlies
D.
Polar winds
Ans:
Westerlies
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.
Explanation :
The Roaring Forties is the name given to strong westerly winds found in the Southern Hemisphere, generally between the latitudes of 40 and 50 degrees. The Westerlies play an important role in carrying the warm, equatorial waters and winds to the western coasts of continents, especially in the southern hemisphere because of its vast oceanic expanse.