In extractive metallurgy of lead, the reduction of the roasted ore to the molten metal by heating with coke is called:

The process of extracting the metal from its ore is called :

The process of reducing the roasted oxide ore to metal under molten condition.

During extraction of a metal there is roasted if it is a

In extractive metallurgy of zinc, partial fusion of ZnO with coke is called ____ and reduction of the ore to moleten metal is called ______(smelting, calcining, roasting, sintering).

In extractive metallurgy of zinc, partial fusion of ZnO with coke is called ____ and reduction of the ore to moleten metal is called ______(smelting, calcining, roasting, sintering).

The process of extraction of metals from their ore is called.

The art of extracting metals from their ores is called ……………

During extraction of a metal the ore is roasted if it is a

In metallurgy, the sulphide ore of copper is partly roasted. Why?