Question

Photochemical smog consists of ____________.

a. coal dust
b. water droplets and soot.
c. ozone
d. acid rain
Please don't guess to get points :) thanks!

Answer 1

Answer : The correct option is, (C) Ozone

Explanation :

Photochemical smog : It is a type of smog that is produced when an ultraviolet light which comes from the sun reacts with the nitrogen oxides in the atmosphere to gives ozone and PAN (peroxyacetyl nitrate) as a product. It is a mixture of air pollutants.

The reaction of the formation of photochemical smog are :

`N_2+O_2\rightarrow 2NO\\\\2NO+O_2\rightarrow 2NO_2\\\\NO_2\overset{sunlight}\rightarrow NO+[O]\\\\O_2+[O]\rightarrow O_3`

Hence, the photochemical smog consists of ozone.