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The Kjeldahl's method for the estimation of nitrogen can be used to estimate the amount of nitrogen in which one of the following compounds?
A
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B
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C
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D
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Detailed Solution
Kjeldahl's method is not applicable to compounds containing nitrogen in nitro and azo groups, or nitrogen present in the ring (e.g. pyridine), as the nitrogen of these compounds does not change to ammonium sulphate under these conditions.
So it can be used for aniline (nitrogen in an $-NH_2$ group).