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Among the following crops, which one is the most important anthropogenic source of both nitrous oxide and methane? (UPSC CSE Prelims 2022 GS Paper-1)

A. Cotton B. Rice C. Sugarcane D. Wheat Solution: B Some of the anthropogenic source of methane includes rice paddies, coal mining, biomass burning, domestic sewage treatment, animal wastes, landfills, etc. The anthropogenic sources of nitrous oxide includes cultivated soils, biomass burning, stationary combustion, human sewage, etc. Hence, option (B) is correct.
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Consider the following pairs: (UPSC CSE 2022 GS Paper 1)

(Peak) - (Mountains) 1. Namcha Barwa - Garhwal Himalaya 2. Nanda Devi - Kumaon Himalaya 3. Nokrek - Sikkim Himalaya Which of the pairs given above is/are correctly matched? A. 1 and 2 B. 2 only C. 1 and 3 D. 3 only Solution: D Namcha Barwa is a mountain peak lying in Tibet.  Nanda Devi is the second highest peak in India after Mt. Kanchenjunga. It is located in Garhwal Himalayas.  Nokrek is the highest peak of the Garo hills and is located in Meghalaya. Hence, option (D) is correct. Read about the Divisions of Himalayas .
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