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AMU Medical AMU Solved Paper-1995

  • question_answer
    Lowering of vapour, pressure,\[\Delta p\]: elevation in boiling point.\[\Delta {{T}_{b}}\]: and depression in freezing point,\[\Delta {{T}_{f}}\]of a solvent for the same molar concentration of each of the three solutes: [A] sugar, [B]\[NaCl,\] and [C]\[BaC{{l}_{2}}\]follow the sequence:

    A)  \[\Delta p:A<B<C\]    

    B)  \[\Delta {{T}_{b}}:C>B>A\]

    C)  \[\Delta {{T}_{f}}:A<B<C\]   

    D)  all of these

    Correct Answer: D

    Solution :

    : If solute dissociates in the solution, e.g. \[NaCl,MgC{{l}_{2}},BaC{{l}_{2}}\]etc., the number of particles in solution will be more than that actually dissolved and value of colligative properties will be higher.


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