Question

Photochemical smog occurs in warm, dry and sunny climate, One of the following is not amongst the components of photochemical smog, identify it.
A. `NO_(2)`
B. `O_(3)`
C. `SO_(2)`
D. Unsaturated hydrocarbon

Answer 1

Correct Answer - C
The smog which is formed in presence of sunlight is called photochemical smog. This occurs in the months of summer when `NO_(2)` and hydrocarbons are present in large amounts in atmosphere.
Concentration of `O_(3), PAN`, aldehydes and ketones builds up in the atomsphere `SO_(2)` is not responsible for photochemical smog.