Question:
Among the gases (a) - (e), the gases that cause greenhouse effect are :
(a) $\mathrm{CO}_{2}$
(b) $\mathrm{H}_{2} \mathrm{O}$
(c) $\mathrm{CFCs}$
(d) $\mathrm{O}_{2}$
(e) $\mathrm{O}_{3}$
Correct Option: , 4
Solution:
$\mathrm{CO}_{2}, \mathrm{H}_{2} \mathrm{O}, \mathrm{CFCs}$ and $\mathrm{O}_{3}$ are green house gases.