Question 21 : Which of the following radiations of the sun do greenhouse gases trap?
1. Visible radiations
2. Infrared radiations
3. UV radiations
4. All the radiations
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Question 22 : In the lower layers of atmosphere, what range of wavelengths of light is predominant?
1. Less than 100 nm
2. Greater than 300 nm
3. Between 100-300 nm
4. All wavelengths are equally present
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Question 23 : 'Roaring forties' is the term used to describe which of the following winds?
1. East-to-west air winds in the southern hemisphere
2. West-to east air winds in the northern hemisphere
3. East-to-west air winds in the northern hemisphere
4. West-to-east air winds in the southern hemisphere
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Question 24 : The ozone hole is a phenomenon that has occurred in:
1. Arctic region
2. Northern temperate region
3. Southern temperate region
4. None of the mentioned
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Question 25 : Which of the following is the largest sink for carbon dioxide gas?
1. Forests
2. Oceans
3. Ice sheets
4. Grasslands
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Question 26 : How much of the sun's radiation energy is absorbed by the greenhouse gases to warm the planet?
1. 75PW
2. 1750GW
3. 1500MW
4. 150TW
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Question 27 : Ever since the industrial revolution, by how much has the average temperature of the Earth increased?
1. 0.24^oC
2. 0.6^oC
3. 1.2^oC
4. 1.8^oC
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Question 28 : Which of the following greenhouse gas is contributed by cattle farming?
1. Nitrous oxide
2. Methane
3. Carbon monoxide
4. All of the mentioned
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Question 29 : Which of the following gases has the highest radiative efficiency?
1. Sulphur hexafluoride
2. Carbon tetrachloride
3. PFTBA
4. CFC
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Question 30 : Nitrogen also helps in preventing UV rays from reaching the Earth.
1. True
2. False
3.
4.
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