environment easy MCQ

Which of the following greenhouse gases is commonly known as 'laughing gas'?

  1. Methane
  2. Nitrous oxide
  3. Carbon dioxide
  4. Chlorofluorocarbon

Answer: Nitrous oxide

Nitrous oxide (N2O) is known as laughing gas and is also a potent greenhouse gas and ozone-depleting substance.

Topic Environmental Pollution
Exam Relevance SSC, Railway
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