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NEET Sample Paper NEET Sample Test Paper-40

  • question_answer
    4.5 g of Al (atomic mass 27 amu) is deposited at cathode from \[A{{l}^{3+}}\]solution by a certain quantity of charge. The volume of \[{{H}_{2}}\]produced at STP from \[{{H}^{+}}\]ions in solution by the same quantity of charge will be

    A)  11.2 L

    B)  44.8 L

    C)  5.6 L

    D)  22.4 L

    Correct Answer: C

    Solution :

     Eq. of \[{{H}_{2}}=Eq.\]of \[Al=\frac{4.5}{27.3}=0.5\] \[\because \]\[1\,eq.\,{{H}_{2}}=11.2\,L\] \[\therefore \]\[0.5eq.\,{{H}_{2}}=5.6\,L\]


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