Biuret test is shown by

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secondary amine

primary amine

nitrile group

urea

answer is C.

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Detailed Solution

Biuret test is shown by urea

A white crystalline material known as biuret is produced when two urea molecules react at $155 ° C$ and release ${NH}_{3}$ . An alkaline solution of copper sulphate is added to white solid biuret in the process described above, and the result is a violet colour, which serves as a test for the presence of urea.

Hence option C is correct

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Best Online Course for IIT JEE

Best Online Course for NEET

Best Online Course for CBSE