JEE Main 2023ChemistryGeneral Principles and Processes of Isolation of MetalsEasyMCQ

JEE Main 2023 — General Principles and Processes of Isolation of Metals Question with Solution

JEE Main 2023 (15 Apr Shift 1)

Question

Which one of the following is not an example of calcination?

Choose an option

Show full solutionCorrect option: C
Correct answer
C2PbS+3O2→∆2PbO+2SO2

Step-by-step explanation

Calcination is a process in which ore is heated in the absence of air or air might be supplied in a limited quantity. 

Roasting involves the heating of ore lower than its melting point in the presence of air or oxygen.

2PbS+3O2→∆2PbO+2SO2

The above reaction is an example of roasting. Rest all the reactions are heated in the absence of oxygen.

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About this question

This is a previous-year question from JEE Main 2023, covering the General Principles and Processes of Isolation of Metals chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.