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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 26 July 2022, Shift 2, Chemistry Q78

Question 78 of 90 in this shift, Chemistry question 18 of 30, Section A.

Vulcanization of rubber is carried out by heating a mixture of
  1. (1)isoprene and styrene
  2. (2)neoprene and sulphur
  3. (3)isoprene and sulphurOfficial answer
  4. (4)neoprene and styrene

Official answer

Option 3

NTA final key.

Chapter
Polymers
Topic
Polymers
Idea tested
Natural and Synthetic Rubber

Same idea in other shifts

Asked 2× in all
  1. 28 Jun 2022, Shift 2 · Q78Given below are two statements, one is Assertion (A) and other is Reason (R). Assertion (A) : Natural rubber is a linear polymer of…EasyAssertion–reason

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 108 of the 174 JEE Main shifts held from 2017 to 2026.