Question

Kjeldahl's method for the estimation of nitrogen is applicable for ?

1. Nitrobenzene
2. Pyridine
3. Azobenzene
4. Aniline​

Answer 1

Answer:

3

Explanation:

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Answer 2

$\huge{\mathcal {\purple{A}\green{N}\pink{S}\blue{W}\purple{E}\green{R}\pink{!}}}$

Kjeldahl method is not applicable to compounds containing nitrogen in nitro and azo groups and nitrogen present in rings (e.g. pyridine, quinoline, isoquinoline) as nitrogen of these compounds does not convert to ammonium sulphate under the conditions of this method. Therefore, option D is correct.