Which of the following gives a positive test with ninhydrin?JEE Main 2024 (05 Apr Shift 1)AStarchBEgg albuminCPolyvinyl chlorideDCellulose
Question
Solution 1
Ninhydrin is a chemical reagent used to detect ammonia or primary and secondary amines. When it reacts with these substances, it forms a deep blue or purple color.
A. Starch - Starch is a polysaccharide and does not contain any amino group. So, it will not give a positive test with ninhydrin.
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