Match List I with List II and choose the correct answer from the options given below:

List I

i.Toxic Pollutant

ii.Nontoxic pollutant

iii.Macroscopic pollutant

iv.Pathogenic pollutant

List II

a.Chlorine

b.Protozoa

c.Benzene

d.Food Cans

Ai-c, ii-a, iii-b, iv-d

Bi-c, ii-a, iii-d, iv-b ✓ Correct

Ci-b, ii-a, iii-d, iv-c

Di-a, ii-b, iii-c, iv-d

Correct answer: (B) i-c, ii-a, iii-d, iv-b

Explanation

Water pollutants are grouped by their nature into toxic, nontoxic, macroscopic and pathogenic types.

A toxic pollutant here is benzene, a harmful carcinogenic chemical.

Chlorine is placed as the relatively nontoxic pollutant at the levels used for treatment.

Food cans are a macroscopic pollutant, large visible debris that litters water bodies.

Protozoa are pathogenic pollutants, disease-causing organisms carried in water.

This classification helps target the right treatment for each pollutant type.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.