Q. Which are the primary constituent of photochemical smog?
A) $CO_{2}$ and $NO_{2}$
B) Hydrocarbons and CFCs
C) $SO_{2}$ and $CO$
D) $NO_{2}$ and hydrocarbons
Explanation
Photochemical smog is highly oxidizing polluted atmosphere comprising largely of nitrogen oxides ($NO_{x}$), ozone ($O_{3}$), $H_{2}O_{2}$, organic peroxides and PAN. This is produced as a result of photochemical reaction among primary constituents like nitrogen oxides ($NO_{x}$), hydrocarbons and ozone ($O_{3}$).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.