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NEET Sample Paper NEET Sample Test Paper-36

  • question_answer
    0.2 g of an organic compound containing C, H and O on combustion yielded \[0.147\,g\,C{{O}_{2}}\]and 0.12 g water. The percentage of oxygen in it is:

    A)  73.34%     

    B)  78.45%

    C)  83.23%     

    D)  89.50%

    Correct Answer: B

    Solution :

     % \[C=\frac{12\times 0.147}{44\times 0.2}\times 100=20\] % of \[H=\frac{2\times 0.12}{18\times .2}\times 100=6.66\] \[\therefore \]of \[O=100-20-6.66=73.44\]


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