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NEET Sample Paper NEET Sample Test Paper-58

  • question_answer
    The average osmotic pressure of human blood is 7.8 bar at\[{{37}^{{}^\circ }}C\]. What is the concentration of an aqueous NaCI solution that could be used in the blood stream?

    A) 0.15 mol/L        

    B) 0.30 mol/L

    C) 0.60 mol/L        

    D) 0.45 mol/L

    Correct Answer: A

    Solution :

    [a] 0.15 mol/L NaCI solution used should be isotonic with bloodstream. For NaCI \[i=2,\,\pi =iCRT\] \[\therefore \,\,C=\frac{\pi }{iRT}\] \[=\frac{7.8\,bar}{2\times 0.083\,bar\,L{{K}^{-1}}\,mo{{l}^{-1}}\times 310K}\]


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