Which test is used to detect the presence of primary amines through the formation of an offensive-smelling carbylamine (isocyanide)?
Answer and explanation
Correct answer: D. Carbylamine test
- Step 1: Both aliphatic and aromatic primary amines (R-NH2) react with chloroform (CHCl3) and alcoholic KOH on warming. Step 2. They form an extremely foul-smelling isocyanide (R-NC), known as the carbylamine test. Answer: Carbylamine test (treatment with chloroform and alcoholic KOH). Why not the others: Biuret test detects peptide bonds; Ninhydrin detects alpha-amino acids; Molisch test detects carbohydrates.
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