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Friday, 9 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctMediumRecall

JEE Main 3 August 2021, Shift 2, Chemistry Q49

Question 49 of 90 in this shift, Chemistry question 19 of 30, Section A.

Select the odd group
  1. (1)Protein, Starch, Cellulose
  2. (2)Nylon 6, Polythene, Teflon
  3. (3)Rayon, Caprolactum, Buna-SOfficial answer
  4. (4)Nylon 6,6, Dacron, Buna-N

Official answer

Option 3

NTA final key.

Chapter
Polymers

Same idea in other shifts

Asked 3× in all
  1. 13 Apr 2023, Shift 2 · Q80Match List I with List II LIST I | LIST II A. Weak intermolecular forces of attraction | I. Hexamethylenediamine + adipic acid B. Hydrogen…MediumMatch the list
  2. 29 Jun 2022, Shift 1 · Q77The polymer, which can be stretched and retains its original status on releasing the force isEasySingle correct

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.