Match List I with List II

Choose the correct answer from the options given below

We need to match each pollutant in List-I with its correct source in List-II.

(A) Microorganisms

Microorganisms such as bacteria, viruses, and other pathogens are primarily found in domestic sewage (II). Human waste and household water contain large amounts of harmful microorganisms.

So, A matches with II.

(B) Plant nutrients

Plant nutrients like nitrates, phosphates, and potassium compounds come from chemical fertilizers (III). When excess fertilizers run off into water bodies, they cause eutrophication.

So, B matches with III.

(C) Toxic heavy metals

Toxic heavy metals such as mercury (Hg), lead (Pb), cadmium (Cd), and chromium (Cr) are released from chemical factories (IV) as industrial waste.

So, C matches with IV.

(D) Sediment

Sediment (soil, sand, and rock particles) is produced during strip mining (I). Strip mining removes the surface layer of earth, leading to large amounts of sediment runoff.

So, D matches with I.

The correct matching is: A-II, B-III, C-IV, D-I

Therefore, the correct answer is Option A: A-II, B-III, C-IV, D-I.