Question

Which one of the following is not considered as primary pollutant ?
(A) Photochemical smog
(B) Smoke
(c)CO2
(D) pm 2.5​

Answer 1

Answer:

Ozone

Which of these is NOT a primary pollutant? Explanation: Ozone is not a primary pollutant since it is formed by the photo-chemical reaction of oxygen with the UV rays and not directly discharged into the atmosphere by a source.

Answer 2

(D) pm 2.5

Thos is the solution

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