Which of the following methods is used in purification of mercury?

Liquation

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Distillation

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Electrolytic refining

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Chemical reduction

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Solution

The correct option is D Distillation
Liquation:
This method is used for the refining of metals having low melting point and are associated with high melting impurities, e.g., $P b, S n, S b, B i$ .
Distillation:
Metals having low boiling point are refined by this method. For example, zinc, cadmium and mercury.
Electrorefining of Metals:
Metals such as $C u, A g, Z n, S n, P b, A l, N i, C r$ are refined by this method.

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