Question

Match the pollutants involved in the contamination of water bodies with their sources.
$\begin{array}{cc}\text{Pollutants}& \text{Source}\\ \text{(A) Microorganisms}& \text{(1) Chemical fertilizers}\\ \text{(B) Heavy metals}& \text{(2) Industrial effluents}\\ \text{(C) Sediments}& \text{(3) Domestic sewage}\\ \text{(D) Phosphorus and nitrogen}& \text{(4) Run off from plains}\end{array}$

• A. A-3,B-2,C-4,D-1
• B. A-2,B-5,C-3,D-1
• C. A-1,B-3,C-2,D-4
• D. A-4,B-2,C-1,D-5

Answer 1

The correct option is A A-3,B-2,C-4,D-1

Domestic sewage is the source of microorganisms, chemical fertilizers are the source of phosphorus and nitrogen, run off from plains give sediments and industrial effluents release heavy metals.