Learn

Saturday, 31 October

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

MacArthur-Forrest Cyanide Process

JEE Main asked MacArthur-Forrest Cyanide Process 6 times in 6 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 2022 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
6
in 6 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.

00.10.20’170’200.03’210.17’220’230’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 5 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
  • 20225 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Match the list is the usual form. Skill tested: recall.

  • Match list on metallurgical processes
  • Odd-one-out among metals by extraction

Difficulty

Easy 3Medium 3Hard 0

Every question was multiple choice.

Every question

All 6 questions

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

  1. 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
  2. 27 Jun 2022, Shift 2 · Q63**Statement I:** Leaching of gold with cyanide ion in absence of air / O2\mathrm{O_2} leads to cyano complex of Au(III). **Statement II:**…MediumTwo statements
  3. 27 Jun 2022, Shift 1 · Q66Match List - I with List - II. List - I (A) Concentration of gold ore (B) Leaching of alumina (C) Froth stabiliser (D) Blister copper List…MediumMatch the list
  4. 25 Jun 2022, Shift 1 · Q64Leaching of gold with dilute aqueous solution of NaCN in presence of oxygen gives complex [A], which on reaction with zinc forms the…EasySingle correct
  5. 30 Jul 2022, Shift 2 · Q36Match List I with List II List I | List II A. Cyanide Process | I. Vapour phase refining B. Froth flotation process | II. Aluminium C.…EasyMatch the list
  6. 25 Jul 2021, Shift 2 · Q35Match List I with List II : (Both having metallurgical terms) List - I (a) Concentration of Ag ore (b) Blast furnace (c) Blister copper…EasyMatch the list

Shifts: 25 Jul 2021, Shift 2, 25 Jun 2022, Shift 1, 27 Jun 2022, Shift 2, 27 Jun 2022, Shift 1, 29 Jun 2022, Shift 1, 30 Jul 2022, Shift 2.

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