Question

Kjeldahl's method cannot
be used for the estimation
of nitrogen in
which option is correct??​

Answer 1

$\huge\bold\red{Answer}$

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 sulfate under the conditions of this method.