Home PYQs UPPSC UPPSC MCQs Prelims 2001 (GS Paper I)

Question

Which of the following is not a greenhouse gas?

  1. Carbon dioxide
  2. Methane
  3. Oxygen
  4. Water vapor

Answer:

Option C: Oxygen

Detailed Solution:

The correct answer is “Oxygen ”.

Although crucial for life, oxygen is not a greenhouse gas. It doesn't trap heat in the atmosphere in the same way that CO2, methane, and water vapor do.