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Electrolytic Refining of Copper

In extractive...

Question

In extractive metallurgy of zinc, partial fusion of ZnO with coke is called and reduction of the ore to molten metal is called (smelting, calcining, roasting, sintering).
1. Roasting; calcining
2. Roasting; smelting
3. Sintering; smelting
4. Sintering; calcining

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Solution

In extractive metallurgy of zinc, partial fusion of $Z n O$ with coke is called sintering and reduction of the ore to molten metal is called smelting.

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