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NEET Sample Paper NEET Sample Test Paper-58

  • question_answer
    Mass percentage of benzene \[({{C}_{6}}{{H}_{6}})\] and \[(CC{{l}_{4}})\] carbon tetrachloride if 22g of benzene is dissolved in 122g of \[CC{{l}_{4}}\].

    A) 84.72%                        

    B) 64%   

    C) 92%                             

    D) 72%

    Correct Answer: A

    Solution :

    [a] 84.72% Mass of solution = Mass of \[{{C}_{6}}{{H}_{6}}\]+mass of \[CC{{l}_{4}}\] \[=22g+122g\] \[=144g\] \[Mass\,\,of\,%\,of\,benzene\,=\frac{Mass\,of\,benzene}{Mass\,of\,solution\,}\times 100\] \[=\frac{22}{144}\times 100=15.28%\] \[Mass\,%\,of\,CC{{l}_{4}}=\frac{Mass\,of\,CC{{l}_{4}}}{Mass\,of\,solution}\times 100\,\]  \[=\frac{122}{144}\times 100=84.72%\]


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