Question

Which of the following is a secondary air pollutant ? (a) SPM (b) PAN (c) SO2
(d) NO2

Answer 1

Answer:

Akmaw.,, when it was to the come from the other side and then we come to the

Explanation:

and then what you were gonna do if do what you want you and do what you want to do

Answer 2

From the given followings the secondary air pollutant is (Option b)PAN.

• Secondary pollutants are those pollutants that are not emitted from any physical or mechanical source, rather which is formed in the atmosphere. Actually, some pollutants from a direct source react with the particle in the atmosphere and make Secondary air pollutants.
• The Full form of PAN is  Peroxyacyl nitrates.PANs formed in the atmosphere when oxidizes organic compounds from various sources react and mix with nitrogen dioxide in the air.