Match List I (Pollutant) with List II (Health effect) and choose the correct answer from the options given below.

List I

i.Carbon monoxide (CO)

ii.Nitrogen dioxide (NO2)

iii.Volatile organic compounds (VOCs)

iv.Ozone (O3)

List II

a.Allergenic

b.Carcinogenic

c.Asphyxiant

d.Blue baby syndrome

Ai-c, ii-d, iii-b, iv-a ✓ Correct

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

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

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

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

Explanation

Carbon monoxide acts as an asphyxiant by binding haemoglobin and starving tissues of oxygen.

Nitrogen dioxide is linked with blue baby syndrome through nitrite formation in the blood.

Volatile organic compounds such as benzene are carcinogenic on long exposure.

Ozone here is paired with allergenic type irritant effects on the airways.

These matches turn on the distinct way each pollutant harms the body.

Blue baby syndrome, or methaemoglobinaemia, lowers the blood's oxygen carrying ability.

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