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UPSC 2017: In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be the potential sites for carbon sequestration? 1. Abandoned and uneconomic coal seams 2. Depleted oil and gas reservoirs 3. Subterranean deep saline formations Select the correct answer using the code given below:
(a)1 and 2 only
(b)3 only
(c)1 and 3 only
(d)1, 2 and 3
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Not attemptedCorrect Answer: (d) 1, 2 and 3
CO₂ captured from the atmosphere can be injected for long-term storage into several geological formations: unmineable/abandoned coal seams where the gas adsorbs onto coal; depleted oil & natural-gas reservoirs that have already proved their capacity to trap hydrocarbons for millions of years; and deep saline aquifers whose porous rock and overlying caprock keep the gas contained. Hence all three sites listed are valid, making option (d) correct. ([insightsonindia.com](https://www.insightsonindia.com/2017/06/19/answer-key-upsc-civil-services-prelims-exam-2017-general-studies-paper-1/?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2017 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 2017, GS Paper 1, as Question 25. It falls under Environment & Ecology > Climate Change & Greenhouse Gases.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
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.