Q. Which of the following is a primary pollutant?
A) CO
B) PAN
C) Aldehydes
D) $H_{2}SO_{4}$
Explanation
The correct answer is Option A: CO.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.