UPPCS 2020 Pre

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

Verified Answer
A. Nitrogen oxide
B. Carbon dioxide
C. Methane
D. Ozone

Explanation:

Carbon dioxide, Methane, and Ozone are naturally occurring greenhouse gases. Nitrogen oxide (NOx) is primarily an air pollutant, though nitrous oxide (N2O) is a greenhouse gas. However, 'Nitrogen oxide' as a general term is not considered a major natural greenhouse gas in the same way as the others.