Match List I (metal) with List II (effect):

List I

i.Chromium

ii.Arsenic

iii.Cadmium

iv.Iron

List II

a.Thalassaemia

b.Itai-itai

c.Dermatitis

d.Carcinogen

Ai-d, ii-c, iii-b, iv-a ✓ Correct

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

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

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

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

Explanation

Chromium, especially its hexavalent form, acts as a carcinogen.

Arsenic exposure causes skin lesions and dermatitis.

Cadmium poisoning produces the bone disease itai-itai.

Iron overload is linked with thalassaemia in affected patients.

The correct pairing ties chromium to cancer, arsenic to skin disease, cadmium to itai-itai and iron to thalassaemia.

The itai-itai disaster in Japan followed cadmium contamination of rice from mining waste.

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