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JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Lowering of vapour pressure

  • question_answer
    For a dilute solution, Raoult's law states that [CPMT 1987; BHU 1979; IIT 1985; MP PMT 2004; MNR 1988; AMU 2002]

    A)                 The lowering of vapour pressure is equal to mole fraction of solute

    B)                 The relative lowering of vapour pressure is equal to mole fraction of solute

    C)                 The relative lowering of vapour pressure is proportional to the amount of solute in solution

    D)                 The vapour pressure of the solution is equal to the mole fraction of solvent

    Correct Answer: B

    Solution :

                According to the Raoult?s law for the non-volatile solute the relative lowering of vapour pressure of a solution containing a non-volatile is equal to the mole fraction of the solute.


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