Question

Photochemical smog consists of an excessive amount of $X$ in addition to aldehydes, ketones, PAN etc. $X$ is :

• A. methane
• B. ozone
• C. carbon dioxide
• D. carbon monoxide

Answer 1

Answer: (B)

ozone

Photochemical smog is basically a mixture of bad chemicals. It consist of nitrogen oxides, ozone, volatile organic compounds and PAN. It is caused by air pollution.
Option B is correct.