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JEE Main & Advanced JEE Main Solved Paper-2014

  • question_answer
    For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl methodand the evolved ammonia was absorbed in 60 mL of\[\frac{M}{10}\]sulphuric acid. The unreacted acid required 20 mL of \[\frac{M}{10}\]sodium hydroxide for complete neutralization. The percentage of nitrogenin the compound is :   JEE Main  Solved  Paper-2014

    A) 3 %                                        

    B)  5 %

    C) 6 %                                        

    D) 10 %

    Correct Answer: D

    Solution :

    % of Nitrogen \[=\frac{1.4\left( 60\times \frac{1}{10}\times 22-20\times \frac{1}{10} \right)}{1.4}=10%\]


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