The pollutants which come directly in the air from sources
are called primary pollutants. Primary pollutants are
sometimes converted into secondary pollutants. Which of
the following belongs to secondary air pollutants?
(a) CO (b) Hydrocarbon
(c) Peroxyacetyl nitrate (d) NO
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Answer: Peroxyacetyl nitrate is the answer.
Explanation: Please mark me as the brainliest
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