JEE Main 2026 · 8 Apr · Shift 2 · Chemistry Q70

ChemistrySingle correct+4 / -1Question 70 of 75

Which of the following amino acid will give violet coloured complex with neutral ferric chloride solution ?

Threonine

Serine

Tyrosine

Cysteine

Answer and worked solution

Official answer: C

Neutral $\ce{FeCl3}$ gives a violet colour with phenols. Tyrosine has a phenolic side chain.

(C)

JEE Main 2026 · 8 Apr · Shift 2, Chemistry question 70