Multiple choice

The process of purification of impure metals by removing metallic and nonmetallic impurities is known as refining of metals. The volatile metals like mercury, zinc and cadmium are refined by

  1. Poling

  2. Liquation

  3. Distillation

  4. Oxidation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This process is employed for purification of volatile metals like mercury, zinc and cadmium. The impure metal is heated in a retort and its vapours are separately condensed in a receiver. While the pure metal distills over, the non-volatile impurities are left behind in the retort.

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