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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Topic Test - Some Basic Concepts of Chemistry (8-5-21)

  • question_answer
    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     

    A) 6

    B) 1

    C) 4

    D) 2

    Correct Answer: C

    Solution :

    [c] \[\because \]   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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