Question

Millon's test gives positive for

• A. Methionine
• B. Tyrosine
• C. Proline

Hint:

Millon's = Phenol group = Tyrosine.

Answer 1

The Correct Option is B

Step 1: Concept
Millon's test is a biochemical test used to detect specific functional groups in proteins or amino acids.

Step 2: Meaning
The reagent consists of mercuric and mercurous nitrates in nitric acid, which reacts with phenolic groups.

Step 3: Analysis
Among the common amino acids, only Tyrosine contains a phenolic hydroxyl group. Therefore, proteins containing Tyrosine will give a positive (brick-red) result.

Step 4: Conclusion
Tyrosine is the amino acid that specifically yields a positive Millon's test.

Final Answer: (B)