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NEET Sample Paper NEET Sample Test Paper-13

  • question_answer
    The vapour pressure of two liquids P and Q are 80 ton- and 60 ton- respectively. The total vpour pressure obtained by mixing 3 mole of P and 2 mole of Q would be

    A)  68 torr                         

    B)  20 torr

    C)  140 torr                       

    D)  72 torr

    Correct Answer: D

    Solution :

     \[{{P}_{T}}={{P}_{P}}\times {{P}_{Q}}=P_{P}^{o}\times P+P_{Q}^{o}\times Q\] \[{{P}_{T}}=80\times \frac{3}{5}+60\times \frac{2}{5}=48+24=72\,\text{torr}\]


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