1.

How can the metal be obtained from its carbonate ore?

Answer»

Solution :The carbonate ore is first heated STRONGLY in LIMITED supply of oxygen and changed into its oxide. This process is called calcination.
`ZnCO_3(s) to^(Heat)ZnO(s)+CO_2(g)`
ZINC oxide is then reduced to zinc METAL by HEATING it with carbon. This process is called reduction.
`ZnO(s)+C(s) to^(Heat)Zn(s)+CO(g)`


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