Statement (A): The chemical formula of calamine ${ZnCO}_{3}$
Statement (B): Froth floatation process is used for sulphide ores.
Statement (C): Self (or) auto reduction is used for bottom of the reactivity series.

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A, B are incorrect but C is correct

All the above statements are incorrect

All the above statements are correct

A, B are correct but C is incorrect

answer is C.

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Detailed Solution

The chemical formula of calamine ${ZnCO}_{3}$ Froth floatation process is used for sulphide Ores, Self (or) auto reduction is used for bottom of the reactivity series. Self – auto reduction is used for middle of the activity series

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