Which of the following is a secondary air pollutant? (A) Photochemical smog (B) Sulphur dioxide (C) Nitrogen dioxide (D) Dust particles

Which of the following is a secondary air pollutant?
(A) Photochemical smog
(B) Sulphur dioxide
(C) Nitrogen dioxide
(D) Dust particles
by

1 Answer

Answer :

(A) Photochemical smog
by

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The main component of photochemical smog is:

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