Smog is produced due to

How smog is produced in the atmosphere ?

Photo-chemical smog is formed due to -

Photochemical smog is formed due to presence of

Photochemical smog is formed due to presence of

Photochemical smog is formed due to presence of :

(A): Photo chemical smog is Oxidising in nature (R): Photo chemical smog is formed due to the combustion of coal and petroleum products

Assertion : Photochemical smog is produced by nitrogen oxides. Reason : Vehicular pollution is a major source of nitrogen oxides.