Which of the following statements is correct ?
Primary pollutants are more harmful than secondary pollutants.
Primary pollutants and secondary pollutants are equally harmful.
Secondary pollutants are more harmful than primary pollutants.
DDT is a secondary pollutant.

Question

Which of the following statements is correct ?
Primary pollutants are more harmful than secondary pollutants.
Primary pollutants and secondary pollutants are equally harmful.
Secondary pollutants are more harmful than primary pollutants.
DDT is a secondary pollutant.

Toppr Admin · Accepted Answer

Primary pollutants persist in the form they are released in the environment- Secondary pollutants are formed by reaction amongst the primary pollutants- Secondary pollutant are more toxic than primary pollutants- DDT is a primary pollutant-

	Column I		Column II
(A)	Biodegradable pollutants	(i)	DDT
(B)	Non-biodegradable pollutants	(ii)	$S O_{2}$
(C)	Primary pollutants	(iii)	PAN
(D)	Secondary pollutants	(iv)	Sewage

Which of the following statements is correct ?Primary pollutants are more harmful than secondary pollutants.Primary pollutants and secondary pollutants are equally harmful.Secondary pollutants are more harmful than primary pollutants.DDT is a secondary pollutant.

Primary pollutants persist in the form they are released in the environment. Secondary pollutants are formed by reaction amongst the primary pollutants. Secondary pollutant are more toxic than primary pollutants. DDT is a primary pollutant.

Which of the following statements is correct ?
Primary pollutants are more harmful than secondary pollutants.
Primary pollutants and secondary pollutants are equally harmful.
Secondary pollutants are more harmful than primary pollutants.
DDT is a secondary pollutant.