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CMC Medical CMC-Medical Ludhiana Solved Paper-2014

  • question_answer
    The relationship between osmotic pressure at 273 K when 10 g glucose \[({{p}_{1}}),\] 10 g urea \[({{p}_{2}})\]and 10 g sucrose \[({{p}_{3}})\] are dissolved in 250 mL of water is

    A)  \[{{p}_{1}}>{{p}_{2}}>{{p}_{3}}\]                            

    B)  \[{{p}_{3}}>{{p}_{2}}>{{p}_{1}}\]

    C)  \[{{p}_{2}}>{{p}_{1}}>{{p}_{3}}\]                            

    D)  \[{{p}_{2}}>{{p}_{3}}>{{p}_{1}}\]

    Correct Answer: C

    Solution :

                    \[p=\frac{w}{mV}RT,\] since,\[wRT/V\]are constant thus,\[p\propto \frac{1}{m}\]          \[\therefore \]\[{{p}_{2}}>{{p}_{1}}>{{p}_{3}}\]


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