Which of the followiing compounds will be suitable for Kjeldahl's method for nitrogen estimation ?

Which of the followiing compounds will be suitable for Kjeldahl's meth

1.	Which of the followiing compounds will be suitable for Kjeldahl's method for nitrogen estimation ?
Answer» Solution :Kjeldahl's METHOD for nitrogen estimation is not applicable to nitro compounds such asnitrobenzene and compounds containing nitrogens in the ring such as pyridine, since during DIGESTION, there are not completely converted into `(NH_(4))_(2)SO_(4)`. Furthermore, diazonium salts LOSE `N_(2)` on heating during digestion. Thus, Kjeldahl's method for nitrogen estimation is only applicable to aniline, i.e, option (b) is correct.