What is photochemical smog and what are its effects?

cbse
natural-resources
cbse-class-9-science

#1

What is photochemical smog and what are its effects?
Answer:
Oxides of nitrogen combine chemically in sunlight and produce hydrocarbons, peroxyacetal nitrate (PAN), and ozone which are commonly known as photochemical smog. This is very harmful and makes eyes watery, affects the growth of plants by checking the rate of photosynthesis and increases the rate of transpiration.