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Saturday, 31 October

JEE Main · Chemistry · Polymers

HDPE vs LDPE and Ziegler-Natta Catalyst

JEE Main asked HDPE vs LDPE and Ziegler-Natta Catalyst 2 times in 2 of the 108 shifts Lumi analysed, all in 2023. It belongs to Polymers (Chemistry). In 2023 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
1 of 8
First asked
2023
the only year
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170’200’210’220.14’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 0 in 24 shifts · 2023: 2 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
  • 20232 of 12
  • 20220 of 24
  • 20210 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: recall.

  • Identify polymer from preparation conditions
  • Statement i/ii on polymerisation conditions

Difficulty

Easy 1Medium 1Hard 0

Every question was multiple choice.

Every question

All 2 questions

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

  1. 11 Apr 2023, Shift 2 · Q80Given 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…MediumTwo statements
  2. 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

Shifts: 11 Apr 2023, Shift 2, 11 Apr 2023, Shift 1.

Same topic

Other ideas in Polymers

Polymers has 22 ideas JEE Main has asked; 12 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisAll repeated ideas