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Saturday, 31 October

JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 27 August 2021, Shift 1, Chemistry Q36

Question 36 of 90 in this shift, Chemistry question 6 of 30, Section A.

Which refining process is generally used in the purification of low melting metals ?
  1. (1)Electrolysis
  2. (2)LiquationOfficial answer
  3. (3)Zone refining
  4. (4)Chromatographic method

Official answer

Option 2

NTA final key.

Chapter
General Principles and Processes of Isolation of Elements
Topic
Metallurgical Extraction
Idea tested
Liquation Refining Principle

Same idea in other shifts

Asked 3× in all
  1. 26 Jul 2022, Shift 1 · Q64Refining using liquation method is the most suitable for metals with :EasySingle correct
  2. 29 Jul 2022, Shift 2 · Q66In liquation process used for tin (Sn), the metalEasySingle correct

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.