Match List I (disease) with List II (cause):

List I

i.Black foot

ii.Pulmonary oedema

iii.Hay fever

List II

a.Arsenic

b.Nitrogen oxides

c.Allergy

Ai-a, ii-b, iii-c ✓ Correct

Bi-b, ii-a, iii-c

Ci-c, ii-b, iii-a

Di-b, ii-c, iii-a

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

Explanation

Black foot disease pairs with arsenic, which poisons the blood vessels of the limbs.

Pulmonary oedema pairs with nitrogen oxides, which inflame the lungs when inhaled.

Hay fever pairs with allergy, triggered by pollen and other allergens.

Long-term arsenic in drinking water blackens and gangrenes the feet.

Nitrogen oxides from vehicle and industry fumes cause fluid to build up in the lungs.

Hay fever is an allergic reaction, not a poisoning by any pollutant.

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