How many of the given compounds will give a positive Biuret test ______ ?
Glycine, Glycylalanine, Tripeptide, Biuret
← JEE Main 2022 · 25 Jun · Shift 2
ChemistryInteger+4 / -1Question 89 of 90
JEE Main 2022 · 25 Jun · Shift 2, Chemistry question 89
Answer and worked solution
Official answer: 2
Biuret test needs at least two peptide (-CO-NH-) links close together. Positive: the tripeptide and biuret itself. Glycine (no peptide bond) and glycylalanine (one) do not respond.
Answer: 2
Topics:Amino acids and proteins