Q. Which of the following groups of gases cause photochemical smog?
A) $O_{3}$PAN and $CO$
B) $HC,NO$ and PAN
C) $O_{2}$,PAN and $NO_{2}$
D) $O_{2},\$PAN and $NO_{3}$
Explanation
$O_{3}$, PAN (Peroxy Acetyl Nitrate) and $NO_{2}$ are responsible for photochemical smog.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.