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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceOtherEasyRecall

JEE Main 27 July 2022, Shift 1, Chemistry Q67

Question 67 of 90 in this shift, Chemistry question 7 of 30, Section A.

Which of the following methods are not used to refine any metal? A. Liquation B. Calcination C. Electrolysis D. Leaching E. Distillation Choose the correct answer from the options given below:
  1. (1)B and D onlyOfficial answer
  2. (2)A, B, D and E only
  3. (3)B, D and E only
  4. (4)A, C and E only

Official answer

Option 1

NTA final key.

Chapter
General Principles and Processes of Isolation of Elements
Topic
Metallurgical Extraction
Idea tested
Metal Refining Techniques

Same idea in other shifts

Asked 6× in all
  1. 13 Apr 2023, Shift 1 · Q65Which one of the following is most likely a mismatch ?MediumSingle correct
  2. 25 Jun 2022, Shift 2 · Q67Given below are two statements. Statement I: During electrolytic refining, blister copper deposits precious metals. Statement II: In the…MediumTwo statements
  3. 25 Feb 2021, Shift 2 · Q35The method used for the purification of Indium is :EasySingle correct
  4. 18 Mar 2021, Shift 2 · Q35Match List - I with List - II : List - I List - II (a) Mercury (i) Vapour phase refining (b) Copper (ii) Distillation Refining (c) Silicon…EasyMatch the list
  5. 4 Sep 2020, Shift 1 · Q33Among statements (a) - (d), the correct ones are : (a) Lime stone is decomposed to CaO during the extraction of iron from its oxides. (b)…MediumOther

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.