After partial roasting, the sulphide of copper is reduced by [MP PMT 1

1.	After partial roasting, the sulphide of copper is reduced by [MP PMT 1993]
A.	Reduction by carbon
B.	Electrolysis
C.	Self-reduction
D.	Cyanide process
Answer» D. Cyanide process

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After partial roasting, the sulphide of copper is reduced by [MP PMT 1993]

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