Question

Which of the following refining process is/are used for refining of zinc?

• A. Distillation Refining
• B. Liquation Refining
• C. Oxidation Refining
• D. Electrolytic Refining

Answer 1

Answer: (A), (D)

The correct options are
A

Distillation Refining

D

Electrolytic Refining

Distillation and electrolytic can both be employed to refine zinc. Since zinc is easily volatilised, distillation is suitable for refining a sample of zinc that contains non-volatile impurities. For greater purity, electrolytic refining is the better choice. An impure zinc sample is used as the anode with $ZnS{O}_4\left(aq\right)$ as the electrolyte. Pure metal gets deposited on the cathode.