# The compound that is NOT a common component of photochemical smog is :

Question:

The compound that is NOT a common component of photochemical smog is :

1. $\mathrm{O}_{3}$

2. $\mathrm{CH}_{2}=\mathrm{CHCHO}$

3. $\mathrm{CF}_{2} \mathrm{Cl}_{2}$

Correct Option: , 4

Solution:

Acrolein, PAN (produced by the oxidation of unburnt hydrocarbons present in the polluted air) and ozone are the main components of photochemical smog. While $\mathrm{CF}_{2} \mathrm{Cl}_{2}$ is not a common component of photochemical smog.