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UPSC 2010: 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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Not attemptedCorrect Answer: (d) 1, 2 and 3
All three listed constituents warm the atmosphere: (1) soot/black-carbon particles absorb solar radiation and reduce albedo; (2) sulphur hexafluoride is the most potent long-lived greenhouse gas (≈23,500 × CO₂); (3) water vapour is the dominant natural greenhouse gas. Therefore 1, 2 and 3 all contribute to atmospheric warming. ([iasexamportal.com](https://iasexamportal.com/Answer-Key/General-Studies-Solution-CSP-2010))
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Frequently Asked Questions
What is the correct answer to this UPSC 2010 Environment & Ecology question?▼
The correct answer is option (d): 1, 2 and 3. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Climate Change & Greenhouse Gases question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2010, GS Paper 1, as Question 149. It falls under Environment & Ecology > Climate Change & Greenhouse Gases.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Climate Change & Greenhouse Gases?▼
UPSC has asked 34 questions from Climate Change & Greenhouse Gases (under Environment & Ecology) across multiple years. Visit the topic page to see the full list and year-wise trends.