Multiple choice

Which of the following gases do(es) not contribute to the greenhouse effect?

  1. Water vapour

  2. Nitrous oxide

  3. Carbon monoxide

  4. Chlorofluorocarbons

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Carbon monoxide is considered to be a non-greenhouse gas. Though CO absorbs infrared rays, it is highly unstable and does not significantly contribute to greenhouse effect.