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Friday, 9 October

JEE Main 2020 · ChemistryMultiple choiceSingle correctMediumApplication

JEE Main 9 January 2020, Shift 2, Chemistry Q42

Question 42 of 75 in this shift, Chemistry question 17 of 25, Section A.

Which polymer has 'chiral' monomer(s) ?
  1. (1)Neoprene
  2. (2)Buna-N
  3. (3)Nylon 6, 6
  4. (4)PHBVOfficial answer

Official answer

Option 4

NTA final key (Jan 2020).

Chapter
Polymers
Topic
Polymers
Idea tested
PHBV Monomers

Same idea in other shifts

Asked 2× in all
  1. 24 Jun 2022, Shift 1 · Q77Which of the following is an example of polyester ?EasySingle 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.