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  4. Kjeldahl’s method cannot be used for the estimation of nitrogen in

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Q. Kjeldahl’s method cannot be used for the estimation of nitrogen in

Organic Chemistry – Some Basic Principles and Techniques

Solution:

Kjeldahl's method for estimation of nitrogen fails for compound containing nitrogen in the ring (pyridine) and compounds containing nitrogen directly linked to oxygen atom (nitro compounds) or another nitrogen atom (azo compounds).