Q. Which compound is mainly responsible for the depletion of ozone layer?
A) $CO_{2}$
B) $CH_{4}$
C) $CH_{3}OH$
D) $CF_{2}Cl_{2}$
Explanation
(d)
Chlorofluorocarbons provide [image:14_image3.emf] free radical, which reacts with ozone and converts it into $O_{2}$ as
[image:14_image4.emf]
The reaction, once start, continues for a long time. Thus, chlorofluorocarbons $(CF_{2}Cl_{2})$ are responsible for the depletion of ozone layer.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.