JEE Main 2022 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 29 July 2022, Shift 1, Chemistry Q65

Question 65 of 90 in this shift, Chemistry question 5 of 30, Section A.

In metallurgy the term “gangue” is used for :

(1)Contamination of undesired earthy materials.Official answer
(2)Contamination of metals, other than desired metal.
(3)Minerals which are naturally occuring in pure form
(4)Magnetic impurities in an ore.

Official answer

Option 1

NTA final key.

Chapter: General Principles and Processes of Isolation of Elements
Topic: Metallurgical Extraction
Idea tested: Flux and Slag Chemistry

Same topic in other shifts

All Metallurgical Extraction questions

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11 Apr 2023, Shift 2 · Q65Given below are two statements : Statement I : In the metallurgy process, sulphide ore is converted to oxide before reduction. Statement…EasyTwo statements
12 Apr 2023, Shift 1 · Q66Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : In the Ellingham…MediumAssertion–reason
13 Apr 2023, Shift 1 · Q65Which one of the following is most likely a mismatch ?MediumSingle correct
15 Apr 2023, Shift 1 · Q65Which one of the following is not an example of calcination?EasySingle 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.