Question

A compound which gives a negative test with ninhydrin, it cannot be a protein or an amino acid. As, it gives a positive test with Benedict’s solution. The compound is

• A. a protein
• B. a monosaccharide
• C. an amino acid
• D. none of the above

Hint:

Benedict’s solution detects reducing sugars like monosaccharides, while ninhydrin detects amino acids and proteins.

Answer 1

The Correct Option is B

Monosaccharides give a positive test with Benedict’s solution, whereas proteins and amino acids react with ninhydrin. The absence of a ninhydrin test indicates it is not a protein or amino acid.