Q. Among the following compounds, which one is not responsible for the depletion of ozone layer?
A) ${CH}_{4}$
B) ${CFCl}_{3}$
C) $NO$
D) $Cl_{2}$
Explanation
(a)
In stratosphere the following reactions takes place which are responsible for the depletion of ozone layer
$NO + O_{3} \rightarrow NO_{2} + O_{2}$
[image:14_image5.emf]
Hence, methane $(CH_{4})$ is not responsible for ozone layer depletion.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.