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AFMC AFMC Solved Paper-2001

  • question_answer
    0.2595 g of a substance containing organic compound in a quantitative analysis gives 0.35 g of barium sulphate. The percentage of sulphur is :

    A) 10.84%                                 

    B) 14.64%

    C) 16.66%                                 

    D) 18.52%

    Correct Answer: D

    Solution :

    \[%\,S=\frac{32}{233}\times \frac{massof\,BaS{{O}_{4}}}{mass\,of\,subs\tan ce}\times 100\][Carius method] (mol. mass of \[BaS{{O}_{4}}=233\]) \[%\,\,S=\frac{32}{233}\times \frac{0.35}{0.2595}\times 100=18.52%\]


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