JEE Main 2021 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 25 February 2021, Shift 2, Chemistry Q35

Question 35 of 90 in this shift, Chemistry question 5 of 30, Section A.

The method used for the purification of Indium is :

(1)van Arkel method
(2)liquation
(3)zone refiningOfficial answer
(4)vapour phase refining

Official answer

Option 3

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

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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
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
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.