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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 29 June 2022, Shift 1, Chemistry Q70

Question 70 of 90 in this shift, Chemistry question 10 of 30, Section A.

Match List - I with List - II. List - I (Metal) (A) Cs (B) Ga (C) B (D) Si List - II (Application) (I) High temperature thermometer (II) Water repellent sprays (III) Photoelectric cells (IV) Bullet proof vest Choose the most appropriate answer from the options given below :
  1. (1)(A)-(III), (B)-(I), (C)-(IV), (D)-(II)Official answer
  2. (2)(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
  3. (3)(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
  4. (4)(A)-(I), (B)-(IV), (C)-(II), (D)-(III)

Official answer

Option 1

NTA final key (2022 Session 1).

Chapter
The p-Block Elements
Topic
Group 13 & 14
Idea tested
Silicones and Zeolites

Same idea in other shifts

Asked 3× in all
  1. 27 Jun 2022, Shift 1 · Q69Match List - I with List - II. List - I (Si-Compounds) (A) (CH3)4Si\mathrm{(CH_3)_4Si} (B) (CH3)Si(OH)3\mathrm{(CH_3)Si(OH)_3} (C)…EasyMatch the list
  2. 3 Aug 2021, Shift 2 · Q37Silicones are group of organosilicon polymers. Which one among the following acts as a chain terminating unit in silicone polymerization?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.