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Friday, 9 October

JEE Main 2025 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 2 April 2025, Shift 1, Chemistry Q70

Question 70 of 75 in this shift, Chemistry question 20 of 25, Section A.

Identify the correct statement among the following :
  1. (1)All naturally occurring amino acids except glycine contain one chiral centre.
  2. (2)All naturally occurring amino acids are optically active.
  3. (3)Amino acid, cysteine can easily undergo dimerisation due to the presence of free SH group.Official answer
  4. (4)Glutamic acid is the only amino acid that contains a −-COOH group at the side chain.

Official answer

Option 3

NTA final key.

Chapter
Biomolecules
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.