A) Nitrobenzene
B) Pyridine
C) Alanine
D) Diazomethane
Correct Answer: C
Solution :
Kjeldahl?s method is not applicable for compounds in which nitrogen is directly linked to oxygen e.g. nitro, pyridine, nitroso andazo. Hence only Alanine can be used to determine percentage of nitrogen. \[{{H}_{2}}N\_\_\_\underset{\begin{smallmatrix} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,CH{{(C{{H}_{3}})}_{2}} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\text{Alanine} \end{smallmatrix}}{\mathop{\underset{|}{\mathop{C}}\,}}\,H\,\,\,\_\_\_COOH\]
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