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

Explain the following (a) Although Au is soluble in aqua-regia, Ag is not (b) Zinc and hot copper is used for recovery of Ag from the complex [Ag(CN)_(2)]^(-) (c) Aluminium metal is frequently used as a reducing agent for extraction of metal such as chromium manganese etc. (d) Partial roasting of sulphide ore is done in the metallurgy of copper.

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

Roasting of the sulphide ore is partially done in the metallurgical operation of copper. Explain.

Roasting of copper pyrites is done

Roasting of sulphide ore is generally performed in

Roasting of sulphide ore is generally performed in