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NEET Sample Paper NEET Sample Test Paper-72

  • question_answer
    0.6 g of a solute is dissolved in 0.1 L of a solvent which develops an osmotic pressure of 1.23 atm at\[27{}^\circ C\]. The molecular mass of the substance is

    A) \[\,149.5 \,g\, mole{{\,}^{-}}^{1}\]      

    B) \[120 \,g\, mole{{\,}^{-}}^{1}\]

    C) \[430 \,g\, mole{{\,}^{-}}^{1}\]          

    D) None of these    

    Correct Answer: B

    Solution :

    \[m=\frac{wRT}{PV}=\frac{0.6\times 0.082\times 300}{1.23\times 0.1}=120\]


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