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UPPSC PCS 2020 · Question 137 of 148

Which one of the following is NOT a green house gas found naturally in the atmosphere?

Environment

  1. ANitrogen oxideCorrect
  2. BCarbon dioxide
  3. CMethane
  4. DOzone

Answer: A. Nitrogen oxide

Explanation

Nitrous oxide (N2O) is a greenhouse gas, but 'nitrogen oxide' (NOx) as stated is not a natural greenhouse gas; CO2, methane and ozone occur naturally.

Source: https://www.drishtiias.com/images/pdf/UPPSC 2020 Prelims GS Paper - 1.pdf

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