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Friday, 9 October

JEE Main 2023 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 11 April 2023, Shift 1, Chemistry Q78

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

The polymer X - consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer X is-
  1. (1)Polytetrafluoroethane
  2. (2)Polyacrylonitrile
  3. (3)High density polytheneOfficial answer
  4. (4)Low density polythene

Official answer

Option 3

NTA final key.

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

Same topic in other shifts

All Polymers questions
  1. 6 Apr 2023, Shift 1 · Q79Polymer used in orlon is:EasySingle correct
  2. 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
  3. 25 Jul 2022, Shift 1 · Q77Melamine polymer is formed by the condensation of :EasyDiagram basedHas a figure
  4. 28 Jul 2022, Shift 1 · Q77Terylene polymer is obtained by condensation of :EasySingle correct
  5. 24 Jun 2022, Shift 1 · Q77Which of the following is an example of polyester ?EasySingle correct
  6. 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.