Home Chemistry General Principles and Processes of Isolation of Elements ( Not In Syllabus ) General Why is partial roasting of sulphide ore done…
Chemistry General Principles and Processes of Isolation of Elements ( Not In Syllabus ) General Single Correct MCQ
Published on: August 13, 2026

Why is partial roasting of sulphide ore done in metallurgy of copper?

A
Auto reduction of CuO formed is carried out by remaining CuS in the reaction.
B
Cu is separated out by partial reduction due to sedimentation.
C
Due to difference in gravity CuO and CuS are separated.
D
Complete roasting cannot be done in one step hence partial roasting is done.

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The correct answer is:
A

: Partial roasting of sulphide ore forms some oxide this oxide then reduces the remaining sulphide ore into metal.

This process is called auto reduction

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