Which one of the following methods can be used to obtain highly pure metal which is liquid at room temperature ?

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Zone refining

Electrolysis

Chromatography

Distillation

answer is D.

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Detailed Solution

The only metal stable in liquid state at room temperature is Hg because it has nonvolatile impurity. Therefore, it is purifi ed by distillation.
Electrolysis is used to purify impure metal.
Chromatography available is used for the purifi cation of the elements which are available in minute quantities.

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