The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants. Which of the following belongs to secondary air pollutants?
A
CO
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B
Hydrocarbon
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C
Peroxyacetylenitrate(PAN)
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D
NO
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Solution
The correct option is DNO
The correct answer is NO (nitrogen oxide) which reacts with oxygen to form nitrogen dioxide, participate in a complex of ultraviolet-driven photochemical reactions. and it also forms acid rain when it reacts with water.