Question

Identify the correct statements.
(i) Winter smog is reducing in nature due to presence of particulate carbon and $S{O}_2$.
(ii) The pollutant obtained from emission tubes of diesel engines is benzopyrene.
(iii) Photochemical smog is made up of PAN, $O_3$ and oxides of nitrogen
(iv) CFCs are stable in troposphere and act as pollutants in stratosphere.

• A. (ii), (iii) and (iv)
• B. (i), (iii) and (iv)
• C. (i), (ii) and (iii)
• D. All of these

Answer 1

Answer: (D)

All of these

As we know the presence of particulate carbon and $S{O}_2$ reduces the winter smog in nature.

Benzopyrene is obtained from the emission tubes of diesel.

PAN, ozone, nitrogen oxide are the components of the photochemical smog.

CFC's causes pollution in the stratosphere but are stable in the troposphere.

Hence, all the given statements are correct.