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NEET Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank Self Evaluation Test - States of Matter

  • question_answer
    At STP, a container has 1 mole of He, 2 mole Ne, 3 mole \[{{O}_{2}}\] and 4 mole\[{{N}_{2}}\]. without changing total pressure if 2 mole of \[{{O}_{2}}\] is removed. The partial pressure of \[{{O}_{2}}\] will be decreased by:

    A) 26%                             

    B) 40%

    C) 58.33%            

    D) 66.66%

    Correct Answer: C

    Solution :

    [c] \[P{{o}_{2}}=\frac{3}{10}\times {{P}_{T}};\] After removing 2 mole of \[{{O}_{2}}\] \[P{{'}_{{{O}_{2}}}}=\frac{1}{10}\times {{P}_{T}}\] Decrease in partial pressure of \[{{O}_{2}}\] \[\frac{\frac{3{{P}_{T}}}{10}-\frac{{{P}_{T}}}{8}}{\frac{3{{P}_{T}}}{10}}\times 100=58.33%\]%


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