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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceMatch the listMediumRecall

JEE Main 27 June 2022, Shift 1, Chemistry Q66

Question 66 of 90 in this shift, Chemistry question 6 of 30, Section A.

Match List - I with List - II. List - I (A) Concentration of gold ore (B) Leaching of alumina (C) Froth stabiliser (D) Blister copper List - II (I) Aniline (II) NaOH (III) SO2\mathrm{SO_2} (IV) NaCN Choose the correct answer from the options given below.
  1. (1)(A) - (IV), (B) - (III), (C) - (II), (D) - (I)
  2. (2)(A) - (IV), (B) - (II), (C) - (I), (D) - (III)Official answer
  3. (3)(A) - (III), (B) - (II), (C) - (I), (D) - (IV)
  4. (4)(A) - (II), (B) - (IV), (C) - (III), (D) - (I)

Official answer

Option 2

NTA final key.

Chapter
General Principles and Processes of Isolation of Elements
Topic
Metallurgical Extraction
Idea tested
MacArthur-Forrest Cyanide Process

Same idea in other shifts

Asked 6× in all
  1. 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
  2. 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
  3. 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
  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
  5. 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

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.