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JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Osmosis and Osmotic pressure of the solution

  • question_answer
    A solution of urea contain 8.6 gm/litre (mol. wt. 60.0). It is isotonic with a 5% solution of a non-volatile solute. The molecular weight of the solute will be     [MP PMT 1986]

    A)                 348.9     

    B)                 34.89

    C)                 3489      

    D)                 861.2

    Correct Answer: A

    Solution :

           For two non-electrolytic solution if isotonic,  \[{{C}_{1}}={{C}_{2}}\] \ \[\frac{8.6}{60\times 1}=\frac{5\times 1000}{m.\,wt.\times 100}\]          \ \[m=348.9\]


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