Given below are some differences between primary air pollutants and secondary air pollutants. Which one of the following is an incorrect difference? Primary air pollutants Secondary air pollutants (a) These persist in the form in which they are added to the environment. These are formed by interaction among the primary pollutants. (b) These are more toxic than the secondary pollutants. These are less toxic than the primary pollutants. (c) Examples include DDT, CO2 Examples include Ozone, PAN. (d) None of these

Question

Given below are some differences between primary air pollutants and secondary air pollutants. Which one of the following is an incorrect difference? Primary air pollutants Secondary air pollutants (a) These persist in the form in which they are added to the environment. These are formed by interaction among the primary pollutants. (b) These are more toxic than the secondary pollutants. These are less toxic than the primary pollutants. (c) Examples include DDT, CO2 Examples include Ozone, PAN. (d) None of these (A) a (B) b (C) c (D) d

Tardigrade Admin · Accepted Answer

Secondary air pollutants are more toxic than primary air pollutants.

	Primary air pollutants	Secondary air pollutants
(a)	These persist in the form in which they are added to the environment.	These are formed by interaction among the primary pollutants.
(b)	These are more toxic than the secondary pollutants.	These are less toxic than the primary pollutants.
(c)	Examples include $DD T$ , $C O_{2}$	Examples include Ozone, $P A N$ .
(d)	None of these