A certain compound gives negative test with ninhydrin and p…

Chemistry Biomolecules Carbohydrates Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

A certain compound gives negative test with ninhydrin and positive test with Benedict's solution. The compound is

A protein

A monosaccharide

A lipid

An amino acid

Text Solution

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The correct answer is:

Protein gives blue-violet colour with ninhydrin (2, 2-dihydroxyindane-1, 3-diene)

Carbohydrates gives brown red ppt. with benedict’s solution (Alk. Citrate ions)

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