In the sequence used during extraction and purification of a metal, a metal sulphide is first converted to a metal oxide, then to an impure metal, and finally to a pure metal: Metal sulphide —x→ Metal oxide —y→ Impure metal —z→ Pure metal. What are x, y and z respectively?

Question

Accepted Answer

roasting, smelting, electrolysis. Metal sulphide is converted to oxide by roasting, the oxide is reduced to impure metal by smelting, and the impure metal is purified to pure metal by electrolysis (electrorefining). So x,y,z = roasting, smelting, electrolysis.

In the sequence used during extraction and purification of a metal, a metal sulphide is first converted to a metal oxide, then to an impure metal, and finally to a pure metal: Metal sulphide —x→ Metal oxide —y→ Impure metal —z→ Pure metal. What are x, y and z respectively?

Solution

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