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Methane

3 PYQ across 2 exams · 2008–2022 — the complete chronological timeline of how UPSC has tested this idea, oldest to newest.

CSE 2008 → NDA 2020
20081 PYQ
CSEQ24
Consider the following: (2008) 1. Rice fields 2. Coal mining 3. Domestic Animals 4. Wetlands Which of the above are sources of methane, a ma…
20201 PYQ
NDAQ140
Which one of the following is the largest composition in biogas ?…
20221 PYQ
CSEQ21
Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide?…
Related concepts — explore their timelines too
Greenhouse GasesBiogasGreenhouse gases
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