16. Consider the following:
1. Carbon dioxide
2. Oxides of Nitrogen
3. Oxides of Sulphur
Which of the above is/are the emission/emissions from coal combustion at thermal power plants?
a) 1 only
b) 2 and 3 only
c) 1 and 3 only
d) 1, 2 and 3
Answer. d) 1, 2 and 3
17. The formation of the ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?
a) Presence of prominent tropospheric turbulence; and inflow of chlorofluorocarbons
b) Presence of prominent polar front and stratospheric clouds; and inflow of chlorofluorocarbons.
c) Absence of polar front and stratospheric clouds; and inflow of methane and chlorofluorocarbons.
d) Increased temperature in the polar region due to global warming
Answer. b) Presence of prominent polar front and stratospheric clouds; and inflow of chlorofluorocarbons.
18. Regarding “carbon credits”, which one of the following statements is not correct?
a) The carbon credit system was ratified in conjunction with the Kyoto Protocol
b) Carbon credits are awarded to countries or groups that have reduced greenhouse gases below their emission quota
c) The goal of the carbon credit system is to limit the increase of carbon dioxide emission
d) Carbon credits are traded at a price fixed from time to time of the United Nations Environment Programme
Answer. d) Carbon credits are traded at a price fixed from time to time of the United Nations Environment Programme
19. Biodiversity forms the basis for human existence in the following ways:
1. Soil formation
2. Prevention of soil erosion
3. Recycling of waste
4. Pollination of crops
Select the correct answer using the codes given below:
a) 1, 2, and 3 only
b) 2, 3, and 4 only
c) 1 and 4 only
d) 1, 2 3 and 4
Answer. d) 1, 2 3 and 4
20. Which one of the following is not a site for the in-situ method of conservation of flora?
a) Biosphere Reserve
b) Botanical Garden
c) National Park
d) Wildlife Sanctuary
Answer. b) Botanical Garden
Answer. b) Botanical Garden
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