Question

During electrolytic refining of zinc, it gets deposited on_____

• A. Cathode
• B. Anode
• C. Deposited on the cathode as well as anode
• D. Remains in the solution

Answer 1

The correct option is A

Cathode

Explanation:

Electrolytic refining is a technique that is used for the extraction and purification of metals that are obtained by refining methods.

In electrorefining of Zinc:

• Anode: Impure zinc
• Cathode: Pure zinc
• Electrolyte: Zinc sulphate solution

On passing current, zinc from the electrolyte is deposited at the cathode while an equivalent amount of zinc from the anode goes into the electrolyte. Therefore, pure zinc is obtained on the cathode.

Reaction at the cathode: $\underset{\mathrm{Zinc}\mathrm{ion}}{{\mathrm{Zn}}^{2+}\left(\mathrm{aq}\right)}+\underset{}{2e^{-}}\to \underset{\mathrm{Zinc}}{\mathrm{Zn}\left(\mathrm{s}\right)}$

Therefore, option (A) is the correct answer.