Secondary pollutants are not directly emitted but are formed in the atmosphere through chemical reactions involving primary pollutants. PAN is formed from the photochemical reaction of hydrocarbons and nitrogen oxides in the presence of sunlight.
Which of the following is a secondary pollutant?
Asked in WBCS Main Paper 4 2022 · Topic: Pollution (Air Pollution: Types, sources, primary & secondary pollutants, smog, acid rain, effects, control technologies & policies.)
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