Learn

Friday, 9 October

JEE Main 2026 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 5 April 2026, Shift 2, Chemistry Q68

Question 68 of 75 in this shift, Chemistry question 18 of 25, Section A.

Identify the incorrect statement about tertiary structure of proteins.
  1. (1)They can be fibrous or globular in structure.
  2. (2)The main forces that stabilize the structure are hydrogen bonding, disulphide links, van der Waals and electrostatic forces of attraction.
  3. (3)The structure remains intact when exposed to pH changes.Official answer
  4. (4)A linear polypeptide chain will convert to a secondary structure and then further folding of the secondary structure will convert to tertiary structure.

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.