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Q.

Mercury is purified by :

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a

passing through dilute HNO3

b

distillation

c

distribution

d

vapour phase refining

answer is B.

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Detailed Solution

Mercury is purified by distillation.

Essentially a distillation procedure, the pyrometallurgical extraction of mercury from its ore. The metal is freed at a temperature above its boiling point when heat is given to the sulphide ore in the presence of oxygen, which reacts with the sulphur to generate sulphur dioxide.

Hence, option B is correct.

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