Question

Which of the following is not a greenhouse gas?

• A. $C{O}_2$
• B. Water vapour
• C. $CFC$
• D. $O_2$

Answer 1

The correct option is D $O_2$

The primary greenhouse gases in earth's atmosphere are water vapour $\left(H_{2}O\right)$, carbon dioxide $\left(C{O}_2\right)$, methane $\left(C{H}_4\right)$, nitrous oxide $\left(N_{2}O\right)$ and ozone $\left(O_3\right)$. Even $CFCs$ are greenhouse gases.