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NEET Sample Paper NEET Sample Test Paper-82

  • question_answer
    Osmotic pressure method is the most useful method for determining the molecular weight of macromolecules. The hydrostatic pressure developed as a result of osmosis is a measure of osmotic pressure. Osmotic pressure of a 0.02 M cane sugar solution at 300 K is \[(R =0.0821 L atm degree{{ }^{-}}^{1}mol{{ }^{-}}^{1})\]

    A)  0.3568 atm                  

    B)  0.4936 atm            

    C)  0.1562 atm                  

    D)  0.5623 atm

    Correct Answer: B

    Solution :

    Given, \[\operatorname{c}= 0.02 M= 0.01 mol/2\] \[R = 0.0821 L-atm / degree / mol\] \[T=\,\,300\,K\] \[\pi  =cRT=0.02 \times  0.0821 \times  300\] \[= \,0.4936 atm\]


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