Some Basic Concepts Of Chemistry Question 216

Question: 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 [CBSE PMT 1998]

Options:

A) 6

B) 1

C) 4

D) 2

Show Answer

Answer:

Correct Answer: C

Solution:

$ \because $ 100gm Hb contain = 0.33gm Fe
$ \therefore $ 67200gm Hb ­= $ \frac{67200\times 0.33}{100}gm\ Fe $

gm atom of Fe = $ \frac{672\times 0.33}{56}=4 $ .



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