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The haemoglobin from the red blood corpu...

The haemoglobin from the red blood corpuscles of most mammals contains approximately `0.33%` of iron by weight. The molecular weight of haemoglobin as `67,200`.
The number of iron atoms in each molecule of haemoglobin is (atomic weight of iron `=56`):

A

4

B

3

C

2

D

1

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The correct Answer is:
A
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