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AMU Medical AMU Solved Paper-1998

  • question_answer
    If 100 g iron powder (at. wt. of\[Fe=56\]) is heated with 32 g of sulphur, (at wt. of\[S=32\]) to prepare one mol of iron sulphide how much iron powder will remain unreacted?

    A)  4 g              

    B)  32 g

    C)  44 g             

    D)  Nil

    Correct Answer: C

    Solution :

     : \[\underset{56}{\mathop{Fe}}\,+\underset{32}{\mathop{S}}\,\to FeS\] 32g of S and 56g of Fe is required to prepare one mole of \[FeS\]. \[\therefore \]\[100-56=44g\]of iron powder will remain unreacted.


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