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Haemoglobin contains 0.33% of iron by we...

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

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The correct Answer is:
B
Fe present in 67200 u `=0.32/100 xx 67200 = 221.8` u
No. of iron atoms present in 67200 `u =(221.8)/56 =4`
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