UPSC 2010 › Environment & Ecology › Climate Change & Greenhouse Gases

3 questions · 2010 · answers as per the UPSC key

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UPSC 2010 · Q61 · Environment & Ecology › Climate Change & Greenhouse Gases · Save

Due to their extensive rice cultivation, some regions may be contributing to global warming. To what possible reason/reasons is this attributable?

  1. The anaerobic conditions associated with rice cultivation cause the emission of methane.
  2. When nitrogen based fertilizers are used, nitrous oxide is emitted from the cultivated soil.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
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Answer: (a) 1 only
UPSC 2010 · Q129 · Environment & Ecology › Climate Change & Greenhouse Gases · Save

What are the possible limitations of India in mitigating the global warming at present and in the immediate future ?

  1. Appropriate alternate technologies are not sufficiently available.
  2. India cannot invest huge funds in research and development.
  3. Many developed countries have already set up their polluting industries in India.

Which of the statements given above is/are correct ?

(a) 1 and 2 only
(b) 2 only
(c) 1 and 3 only
(d) 1, 2 and 3
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Answer: (a) 1 and 2 only
UPSC 2010 · Q149 · Environment & Ecology › Climate Change & Greenhouse Gases · Save

Consider the following which can be found in the ambient atmosphere :

  1. Soot
  2. Sulphur hexafluoride
  3. Water vapour

Which of the above contribute to the warming up of the atmosphere ?

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