UPSC 2012 › Environment & Ecology › Climate Change & Greenhouse Gases

3 questions · 2012 · answers as per the UPSC key

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If National Water Mission is properly and completely implemented, how will it impact the country?

  1. Part of the water needs of urban areas will be met through recycling of waste-water.
  2. The water requirements of coastal cities with inadequate alternative sources of water will be met by adopting appropriate technologies that allow for the use of ocean water.
  3. All the rivers of Himalayan origin will be linked to the rivers of peninsular India.
  4. The expenses incurred by farmers for digging bore-wells and for installing motors and pump-sets to draw groundwater will be completely reimbursed by the Government.

Select the correct answer using the codes given below :

(a) 1 only
(b) 1 and 2 only
(c) 3 and 4 only
(d) 1, 2, 3 and 4
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Answer: (b) 1 and 2 only

The acidification of oceans is increasing. Why is this phenomenon a cause of concern?

  1. The growth and survival of calcareous phytoplankton will be adversely affected.
  2. The growth and survival of coral reefs will be adversely affected.
  3. The survival of some animals that have phytoplanktonic larvae will be adversely affected.
  4. The cloud seeding and formation of clouds will be adversely affected.

Which of the statements given above is/are correct?

(a) 1, 2 and 3 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2, 3 and 4
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Answer: (a) 1, 2 and 3 only

The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere, because it absorbs

(a) the water vapour of the air and retains its heat
(b) the ultraviolet part of the solar radiation
(c) all the solar radiations
(d) the infrared part of the solar radiation
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Answer: (d) the infrared part of the solar radiation