JEE Main · Chemistry · General Principles and Processes of Isolation of Elements
Calcination vs. Roasting
JEE Main asked Calcination vs. Roasting 3 times in 3 of the 108 shifts Lumi analysed, in 2020, 2021 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 2 years.
Updated 2026-10-24
- Times asked
- 3
- in 3 shifts
- Years
- 3 of 8
- First asked
- 2020
- last in 2023
- Pattern
- Comes in cycles
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2020, 2021 and 2023. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.
Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 1 in 24 shifts · 2022: 0 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.
How JEE Main framed it
Single correct is the usual form. Skill tested: recall.
- Not an example of process
- Process for converting ore to oxide
Difficulty
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.
- 15 Apr 2023, Shift 1 · Q65Which one of the following is not an example of calcination?EasySingle correct
- 4 Aug 2021, Shift 1 · Q36The concentrated ores siderite and copper glance are converted to their oxides byEasySingle correct
- 4 Sep 2020, Shift 2 · Q38The processes of calcination and roasting in metallurgical industries, respectively, can lead to :EasySingle correct
Shifts: 4 Sep 2020, Shift 2, 4 Aug 2021, Shift 1, 15 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.
- Metal Refining Techniques6× · 2023
- Ellingham Diagram Basics6× · 2022
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- Hall-Heroult Process5× · 2023
- Bayer Process Chemistry4× · 2022
- Liquation Refining Principle3× · 2022
- Ellingham Diagram Phase Transitions2× · 2023
- Ellingham Diagram Intersections2× · 2022
- Iron Extraction Chemistry2× · 2020
- Blister Copper Formationonce · 2023
- Reducing Agent Selectiononce · 2023
- Acidic vs Basic Flux Selectiononce · 2022