JEE PYQ: Qualitative Analysis Question 4
Question 4 - 2021 (17 Mar Shift 2)
Nitrogen can be estimated by Kjeldahl’s method for which of the following compound?
(1). (Pyridine derivative with -N=NCF₃)
(2). (CH₃-NH₂)
(3). (Compound with nitrogen in ring)
(4). (C₆H₅NO₂)
Show Answer
Answer: (2)
Solution
Kjeldahl method is not applicable to compounds containing nitrogen in nitro groups, azo groups, and nitrogen present in rings (e.g., Pyridine). CH₃NH₂ can be estimated by Kjeldahl’s method.
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