Question

Smog is a common pollutant in places which have

• A. High altitudes
• B. High temperature
• C. High concentration of $SO_{2}$in air.
• D. High concentration of $NH_{3}$in air.

Answer 1

Answer: (C)

High concentration of $SO_{2}$in air.

Answer 2

: High concentration of $SO_{2}$in air