Question: The molecule that has minimum/no role in the formation of photochemical smog, is :
$\mathrm{CH}_{2}=\mathrm{O}$
$\mathrm{N}_{2}$
$\mathrm{O}_{2}$
$\mathrm{NO}$
Correct Option: , 2
Solution:
Chiefly $\mathrm{NO}_{2}, \mathrm{O}_{3}$ and hydrocarbon are responsible for build up smog.
