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JEE Main & Advanced Sample Paper JEE Main Sample Paper-28

  • question_answer
    Volume of water which must be added to \[8\,M\,HC1\] to make \[2L\] of \[7.3%w/vHC1\] solution is

    A)  \[1.5\,L\]                                           

    B)  \[0.5\,L\]

    C)  \[1.95\,L\]                                         

    D)  \[2\,L\]

    Correct Answer: A

    Solution :

    Meq. before dilution = meq. after dilution \[{{N}_{1}}{{V}_{1}}={{N}_{2}}{{V}_{2}}\] \[8\times V=\frac{7.3}{36.5}\times \frac{1000}{100}\times 2\] \[V=\frac{4}{8}.5L\] So volume of water added 1.5L


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