Question
Explain the formation of photochemical smog using a suitable diagram.
Answer :
Word Count : 242
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Photochemical smog is a secondary air pollutant formed through sunlight-driven reactions involving primary pollutants such as nitrogen oxides and volatile organic compounds released mainly from automobiles, thermal power plants, and industrial activities. Under strong solar radiation, nitrogen dioxide absorbs ultraviolet light and undergoes photolysis to form nitric oxide and highly reactive atomic oxygen. This atomic oxygen
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