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Friday, 9 October

JEE Main Chemistry · Class 12

General Principles and Processes of Isolation of Elements: JEE Main previous year questions

General Principles and Processes of Isolation of Elements had 14 questions in the 42 JEE Main shifts Lumi analysed, about 0.4 a shift, asked in 13 of 42 shifts. It ranks 24 of 30 Chemistry chapters by questions; 0% of its questions were hard.

Questions
14
in 13 of 42 shifts
A shift, on average
0.4
of 25 Chemistry questions
Since 2024
-0.5
0.6 a shift in 2017–23, 0.0 in 2024–26
Numerical answer
0
0% of its questions

Year by year

How often it came

Questions in the analysed shifts of each year. Years differ in how many shifts Lumi analysed, so read the bars with the shift count.

Questions each year
0240’172’204’214’223’231’240’250’26

2017: 1 shifts · 2020: 4 shifts · 2021: 4 shifts · 2022: 4 shifts · 2023: 4 shifts · 2024: 8 shifts · 2025: 8 shifts · 2026: 9 shifts

Difficulty by year
  • 2017
  • 20202
  • 20214
  • 20224
  • 20233
  • 20241
  • 2025
  • 2026
  • Easy
  • Medium
  • Hard

Inside the chapter

Topics and the ideas that repeat

2 topics and 9 distinct ideas; 2 ideas were asked more than once. Most questions are single correct and recall.

Topics, by questions

2 questions had no close topic in our taxonomy and are counted for the chapter only.

Ideas asked most
2 repeat

Every question

All 14 General Principles and Processes of Isolation of Elements questions

Newest first. Each opens with its options and the official answer.

2024 1 questions

  1. 29 Jan 2024, Shift 1 · Q65Identify the incorrect pair from the following :EasySingle correct

2023 3 questions

  1. 8 Apr 2023, Shift 2 · Q65In Hall - Heroult process, the following is used for reducing Al2O3\mathrm{Al_2O_3} :-EasySingle correct
  2. 11 Apr 2023, Shift 1 · Q65In the extraction process of copper, the product obtained after carrying out the reactions (i)…EasySingle correct
  3. 13 Apr 2023, Shift 2 · Q65Given below are two statements related to Ellingham diagram: Statement I : Ellingham diagrams can be constructed for formation of oxides,…MediumTwo statements

2022 4 questions

  1. 25 Jul 2022, Shift 1 · Q67The compound(s) that is(are) removed as slag during the extraction of copper is : (A) CaO\mathrm{CaO} (B) FeO\mathrm{FeO} (C)…MediumOther
  2. 28 Jul 2022, Shift 1 · Q66Which of the reaction is suitable for concentrating ore by leaching process ?EasySingle correct
  3. 24 Jun 2022, Shift 1 · Q67Match List - I with List - II : List - I (A) Sphalerite (B) Calamine (C) Galena (D) Siderite List - II (I) FeCO3\mathrm{FeCO_3} (II)…EasyMatch the list
  4. 29 Jun 2022, Shift 1 · Q67In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved ?MediumSingle correct

2021 4 questions

  1. 3 Aug 2021, Shift 2 · Q34Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Fluoride based compound…EasyAssertion–reason
  2. 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
  3. 16 Mar 2021, Shift 2 · Q34Which of the following reduction reaction CANNOT be carried out with coke ?EasySingle correct
  4. 18 Mar 2021, Shift 1 · Q35The chemical that is added to reduce the melting point of the reaction mixture during the extraction of aluminium is :EasySingle correct

2020 2 questions

  1. 6 Sep 2020, Shift 2 · Q33The element that can be refined by distillation is :EasySingle correct
  2. 6 Sep 2020, Shift 2 · Q42For a reaction, 4 M(s)+nO2(g)→2M2On(s)4\,\mathrm{M(s)}+n\mathrm{O_2(g)}\rightarrow 2\mathrm{M_2O_n(s)}, the free energy change is plotted as a function of…MediumSingle correct

Pattern: Asked most years.