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Saturday, 31 October

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

Ellingham Diagram Phase Transitions

JEE Main asked Ellingham Diagram Phase Transitions 2 times in 2 of the 108 shifts Lumi analysed, in 2022 and 2023. 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.

Updated 2026-10-24

Times asked
2
in 2 shifts
Years
2 of 8
First asked
2022
last in 2023
Pattern
Occasional
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2022 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170’200’210.03’220.07’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 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
  • 20231 of 12
  • 20221 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

Assertion–reason is the usual form. Skill tested: conceptual.

  • Slope change in ellingham line
  • Ellingham diagram shape for an oxide

Difficulty

Easy 0Medium 2Hard 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. 12 Apr 2023, Shift 1 · Q66Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : In the Ellingham…MediumAssertion–reason
  2. 30 Jun 2022, Shift 1 · Q67ΔG∘\Delta \mathrm{G}^\circ vs T plot for the formation of MgO, involving reaction 2Mg+O2→2MgO2\mathrm{Mg}+\mathrm{O_2}\rightarrow 2\mathrm{MgO},…MediumDiagram basedHas a figure

Shifts: 30 Jun 2022, Shift 1, 12 Apr 2023, 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