JEE Main 2023 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 11 April 2023, Shift 1, Chemistry Q65

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

In the extraction process of copper, the product obtained after carrying out the reactions (i)

\mathrm{2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2}

(ii)

\mathrm{2Cu_2O + Cu_2S \rightarrow 6Cu + SO_2}

is called

(1)Copper matte
(2)Copper scrap
(3)Blister copperOfficial answer
(4)Reduced copper

Official answer

Option 3

NTA final key.

Chapter: General Principles and Processes of Isolation of Elements
Topic: Metallurgical Extraction
Idea tested: Blister Copper Formation

Same topic in other shifts

All Metallurgical Extraction questions

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28 Jul 2022, Shift 1 · Q66Which of the reaction is suitable for concentrating ore by leaching process ?EasySingle correct
29 Jun 2022, Shift 1 · Q67In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved ?MediumSingle correct
3 Aug 2021, Shift 2 · Q34Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Fluoride based compound…EasyAssertion–reason
25 Jul 2021, Shift 1 · Q34In the leaching of alumina from bauxite, the ore expected to leach out in the process by reacting with NaOH is :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 42 of the 174 JEE Main shifts held from 2017 to 2026.