Q. Amongst the following Kjeldahl’s method can’t be used for.
(I)
(II)
(III)
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(VII)
(VIII) Acetone
(IX) Ethane nitrile
(X) Urea

 1303  162 Organic Chemistry – Some Basic Principles and Techniques Report Error

Answer: 6

Solution:

This method is not applicable to compounds containing in nitro and azo groups, and present in the ring (e.g., pyridine) as of these compounds does not change to (ammonium sulphate) under these reaction conditions.
This method is not applicable to compounds containing atom in nitro , azo compounds , and atom present in ring.
I, II, IV, V, VI, VIII (It is a keto compound which does not have atom). Compounds are not used for the quantitative estimation of in Kjeldahl's method.