The ozone layer is being destroyed by chlorofluorocarbons. In this regard which do you consider as the most harmful?
A. Carbon atom
B. Chlorine atom
C. Fluorine atom
D. The entire compound
Answer: Option B
Solution (By Examveda Team)
Chlorofluorocarbons (CFCs) damage the ozone layer mainly because they release chlorine atoms in the stratosphere under ultraviolet (UV) radiation.A single chlorine atom can destroy thousands of ozone (O₃) molecules through a catalytic reaction before it is removed from the atmosphere.
Fluorine usually forms stable compounds and does not significantly contribute to ozone depletion, while the carbon atom is not responsible for the destructive process.
Therefore, the chlorine atom is the most harmful component of chlorofluorocarbons in ozone layer depletion.

B correct