Q. Which of the following is a secondary air pollution?
A) Hydrocarbons
B) Smog
C) Particulate matter
D) Automobile exhausts
Explanation
Smog secondary pollutants are formed by reactions amongst the primary pollutants. They are often more harmful than primary pollutants
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.