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in Environmental Engineering by (81.4k points)
Which of the following is not a part of photochemical smog?

(a) NO2

(b) O3

(c) PAN

(d) SPM

I had been asked this question by my college director while I was bunking the class.

I need to ask this question from Effects of Air Pollution, Design of Stack Height in division Air Pollution of Environmental Engineering

1 Answer

+2 votes
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Best answer
The correct choice is (d) SPM

The explanation is: Photochemical smog includes NO2, O3 and PAN. The damage to vegetation is caused by NO2, O3 and PAN.

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