a. Choose the ore from those given below which can be used in the above figure.
Bauxite , Tin stone , Copper pyrites , Calamine
b. Give a reason for your answer.

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Solution

a. The ore which can be used in the above figure is Tin stone $(S n O_{2})$ .
b. This figure depicts magnetic separation. $S n O_{2}$ is a magnetic ore. But the gangue, iron tungstate present in this also has magnetic property.

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