Chemistry General Principles and Processes of Isolation of Elements ( Not In Syllabus ) JEE Main 2021 Single Correct MCQ
Published on: August 12, 2026

Consider two chemical reactions

A
and is calcination and and and is roasting and
B
that take place during metallurgical process : The correct option of names given to them respectively is : is roasting Both are producing same product so both are roasting are producing same product so both are calcination is calcination
C
Both

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The correct answer is:
A

Heating in absence of oxygen in calcination.

heating in presence of oxygen in roasting

Hence is calcination while in roasting.

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