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Saturday, 31 October

JEE Main 2023 · ChemistryMultiple choiceTwo statementsMediumRecall

JEE Main 11 April 2023, Shift 2, Chemistry Q80

Question 80 of 90 in this shift, Chemistry question 20 of 30, Section A.

Given below are two statements : Statement I : Ethene at 333 to 343K and 6-7 atm pressure in the presence of AlEt3\mathrm{AlEt_3} and TiCl4\mathrm{TiCl_4} undergoes addition polymerization to give LDP. Statement II : Caprolactam at 533-543K in H2O\mathrm{H_2O} through step growth polymerizes to give Nylon 6. In the light of the above statements, choose the correct answer from the options given below:
  1. (1)Both Statement I and Statement II are true
  2. (2)Both Statement I and Statement II are false
  3. (3)Statement I is true but Statement II is false
  4. (4)Statement I is false but Statement II is trueOfficial answer

Official answer

Option 4

NTA final key.

Chapter
Polymers
Topic
Polymers
Idea tested
HDPE vs LDPE and Ziegler-Natta Catalyst

Same idea in other shifts

Asked 2× in all
  1. 11 Apr 2023, Shift 1 · Q78The polymer X - consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium…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 108 of the 174 JEE Main shifts held from 2017 to 2026.