Question

Protein on reaction with which yields Ruhemann's purple?

• A. Ninhydrin
• B. ${\mathrm{Cu}}^{+2}$
• C. $H_2{O}_2$
• D. Benedict's solution

Answer 1

The correct option is A Ninhydrin

Ninhydrin forms a purple coloured complex called Ruhemann's purple on reacting with the alpha amino acid in a protein. This is a confiormatory test for proteins.