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  9. Q18

MPSC State Service 2018 · GS · Question 18 of 99

Which of the following greenhouse gases is entirely produced by human activities?

Environment

  1. AMethane
  2. BCarbon dioxide
  3. CNitrous oxide
  4. DChlorofluorocarbonsCorrect

Answer: D. Chlorofluorocarbons

Explanation

Chlorofluorocarbons (CFCs) are entirely anthropogenic; methane, CO2 and nitrous oxide also have natural sources.

Source: MPSC Rajyaseva Prelims 2018 GS Paper I (official paper)

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