JEE Main 2021 · ChemistryNumerical answerNumerical valueMediumRecall

JEE Main 31 August 2021, Shift 2, Chemistry Q59

Question 59 of 90 in this shift, Chemistry question 29 of 30, Section B.

In the electrolytic refining of blister copper, the total number of main impurities, from the following, removed as anode mud is __________. Pb, Sb, Se, Te, Ru, Ag, Au and Pt

Official answer

NTA final key.

Chapter: General Principles and Processes of Isolation of Elements
Topic: Metallurgical Extraction
Idea tested: Anode Mud Composition

Same topic in other shifts

All Metallurgical Extraction questions

8 Apr 2023, Shift 2 · Q65In Hall - Heroult process, the following is used for reducing $\mathrm{Al_2O_3}$ :-EasySingle correct
11 Apr 2023, Shift 1 · Q65In the extraction process of copper, the product obtained after carrying out the reactions (i)…EasySingle correct
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.