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NEET Chemistry Solutions / विलयन Question Bank Self Evaluation Test - Solutions

  • question_answer
    A solute X has a solubility of 10.0 g in 100 g of water at \[25{}^\circ C.\] If a solution containing 4.0 g of solute in 50 g of water is subjected to evaporation at constant temperature of\[25{}^\circ C\], the osmotic pressure of the solution

    A) remains unchanged throughout

    B) increases continuously

    C) increases to constant value

    D) decreases to constant value

    Correct Answer: C

    Solution :

    [c] The given solution is unsaturated (saturated one contains 5 g of solute in 50 g of water). On evaporation, concentration of solution increases to saturation and thereafter becomes constant due to excess solid separating out. Hence, osmotic pressure first increases and then becomes constant.


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