Haemoglobin contains 0.33% of iron by weight. The molecular weight of haemoglobin is approximately 67200. The number of iron atoms (At. wt. of Fe = 56) present in one molecule of haemoglobin is

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answer is C.

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Detailed Solution

∵ 100 g Hb contains =0.33 g Fe∴ 67200 g Hb=67200 × 0.33100 g FeGram atom of Fe=672 × 0.3356=4.

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