Question

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
A. (a)6
B. (b)1
C. (c )4
D. (d)2

Answer 1

Correct Answer - C
`:. 100 g Hb` contains`=0.33 g Fe`
`:. 67200 g Hb=(67200xx0.33)/100 g Fe`
Gram atom of `Fe=(672xx0.33)/56=4`.