Kjeldahls method can not be used to detect \( 96 \% \) of N in which of these compounds? (a) Pyr...

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Kjeldahls method can not be used to detect \( 96 \% \) of N in which of these compounds?
(a) Pyridine
(b) Pyrole
- (c) Aniline
(d) Diazo compounds
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