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Why partial roasting of sulphide ore is ...

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

A

Auto reduction of CuO formed is carried out by remaining Cus in the reaction

B

Cu is sparated out by partial reduction due to sedimentation

C

Due ot 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
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