1. Tardigrade
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  3. Chemistry
  4. Which one of the following amino acid does not give the ninhydrin test?

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Q. Which one of the following amino acid does not give the ninhydrin test?

Biomolecules

Solution:

Ninhydrin test is highly specific for the primary amines. All $\alpha$-amino acids give a blue-purple colour with ninhydrin except proline being a secondary amine which gives a yellow orange colour.