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Saturday, 31 October

JEE Main · Chemistry · The p-Block Elements

Silicones and Zeolites

JEE Main asked Silicones and Zeolites 3 times in 3 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to Group 13 & 14, in The p-Block Elements (Chemistry). The longest wait between two years asking it was 1 year. In 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
2 of 8
First asked
2021
last in 2022
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021 and 2022. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170’200.03’210.07’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 2 in 24 shifts · 2023: 0 in 12 shifts · 2024: 0 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20250 of 8
  • 20240 of 18
  • 20230 of 12
  • 20222 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Match the list is the usual form. Skill tested: recall.

  • Identify chain terminating unit in polymerization
  • Match list on elements and applications

Difficulty

Easy 2Medium 1Hard 0

Every question was multiple choice.

Every question

All 3 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 29 Jun 2022, Shift 1 · Q70Match List - I with List - II. List - I (Metal) (A) Cs (B) Ga (C) B (D) Si List - II (Application) (I) High temperature thermometer (II)…MediumMatch the list
  2. 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
  3. 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

Shifts: 3 Aug 2021, Shift 2, 27 Jun 2022, Shift 1, 29 Jun 2022, Shift 1.

Same topic

Other ideas in Group 13 & 14

Group 13 & 14 has 16 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisAll repeated ideas