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NEET Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन Question Bank Self Evaluation Test - Organic Chemistry - Some Basic Principles & Techniques

  • question_answer
    1.4 kg of an organic compound was digested according to Kjeldah method and the ammonia evolved was absorbed in 60 mL of M/ 10 \[{{H}_{2}}S{{O}_{4}}\]solution. The excess sulphuric acid required 20 mL of M/10 \[NaOH\] solution for neutralization. The percentage of nitrogen in the compound is:           

    A) 10                    

    B) 3     

    C) 24                    

    D) 5

    Correct Answer: A

    Solution :

    [a] Milli equivalents of \[{{H}_{2}}S{{O}_{4}}\] \[=60\times \frac{M\times 2}{10}=12\] Milli equivalents of \[NaOH=20\times \frac{M}{10}=2\] Milli equivalent of \[NH=12-2=10\] % of nitrogen \[=\frac{1.4\times \left( N\times V \right)N{{H}_{3}}}{\left( Wt.\text{ }of\text{ }organic\text{ }compound \right)}\] \[\frac{1.4\times 10}{1.4}=10\]


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