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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2001

  • question_answer
    The quantity of electricity required to liberate \[\text{112 c}{{\text{m}}^{\text{3}}}\]of hydrogen at STP from acidified water is:

    A)  965 Coulombs  

    B)  1 Faraday

    C)  0.1 Faraday       

    D)  96500 Coulombs

    Correct Answer: A

    Solution :

    We know that 96,500 coulombs \[=11,200\,c{{m}^{3}}\]of \[{{H}_{2}}\]                 \[\therefore \]\[112\,c{{m}^{3}}\]of \[{{H}_{2}}=\frac{96500\times 112}{11200}\]                                 \[=965\]coulombs


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