Q. 8

Which of the following is a secondary pollutant
(a) PAN (b) particulate matter

(c) hydrocarbons (d) chloroflurocarbons

Answer :

Peroxyacytyl nitrate is a part of smog that causes air pollution. It is a secondary pollutant because they are formed in the atmosphere after the emission of primary pollutants. PAN is formed when oxidized volatile organi compounds combine with nitrogen oxide.

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