List of top Chemistry Questions on Amino Acids asked in JEE Main

Identify the correct statements. (Note: Based on options, the question asks to identify INCORRECT statements).
A. Arginine and Tryptophan are essential amino acids.
B. Glycine does not have chiral centre.
C. Proline is a six membered cyclic ring amino acid.
D. Histidine does not contain heterocyclic ring in its structure.
E. Cysteine has characteristic feature of side chain as $MeS-CH_2-CH_2-$.

Identify the correct statement among the following:

Which of the following compounds is least likely to give effervescence of CO$_2$ in presence of aq. NaHCO$_3$?

A dipeptide, “x”, on complete hydrolysis gives “y” and “z”; “y” on treatment with aqueous HNO$_2$, produces lactic acid. On the other hand, “z” on heating gives the following cyclic molecule.

Based on the information given, the dipeptide X is: