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QUESTION
Q85) 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]




SOLUTION

0.33% of 67200=222 amu
Now 222 /56=4 atoms of FeAnswer: (c)