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

Options

A. 6
B. 1
C. 4
D. 2

Answer

C

Explanation

`because` 100g Hb contain = 0.33 g Fe
`therefore` 67200g Hb ` = (67200 xx 0.33)/(100) g` Fe
No. of atoms of `Fe = (672 xx 0.33)/(56) = 4`