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NEET Sample Paper NEET Sample Test Paper-68

  • question_answer
    The mole fraction of the solute in one molal aqueous solution is

    A) 0.027               

    B) 0.036

    C) 0.018               

    D) 0.009

    Correct Answer: C

    Solution :

    \[W=1000\,\,g\,\,({{H}_{2}}O);\,\,\,n=1\,\,mole\] \[N=\frac{W}{M}=\frac{1000}{18}=55.55\] \[{{x}_{solute}}=\frac{n}{n+N}=\frac{1}{1+55.55}=0.018\]


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