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Saturday, 31 October

JEE Main · Chemistry · General Principles and Processes of Isolation of Elements

Bayer Process Chemistry

JEE Main asked Bayer Process Chemistry 4 times in 4 of the 108 shifts Lumi analysed, in 2021 and 2022. It belongs to Metallurgical Extraction, in General Principles and Processes of Isolation of Elements (Chemistry). The longest wait between two years asking it was 1 year. In 2021 and 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 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.

00.050.10’170’200.07’210.07’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 2 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
  • 20212 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 impurity removed in extraction step
  • Identify reaction suitable for process

Difficulty

Easy 4Medium 0Hard 0

Every question was multiple choice.

Every question

All 4 questions

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

  1. 28 Jul 2022, Shift 1 · Q66Which of the reaction is suitable for concentrating ore by leaching process ?EasySingle correct
  2. 26 Jul 2022, Shift 2 · Q67The metal that is not extracted from its sulfide ore isEasySingle correct
  3. 25 Jul 2021, Shift 1 · Q34In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH is :EasySingle correct
  4. 24 Feb 2021, Shift 1 · Q36Al2O3\mathrm{Al_2O_3} was leached with alkali to get X. The solution of X on passing of gas Y, forms Z. X, Y and Z respectively are :EasySingle correct

Shifts: 24 Feb 2021, Shift 1, 25 Jul 2021, Shift 1, 26 Jul 2022, Shift 2, 28 Jul 2022, Shift 1.

Same topic

Other ideas in Metallurgical Extraction

Metallurgical Extraction has 21 ideas JEE Main has asked; 10 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisAll repeated ideas