Question

The method of electrolyte refining is not suitable in the extraction of :

• A. Aluminium
• B. Copper
• C. Mercury
• D. Silver

Answer 1

Answer: (C)

Mercury

The method of electrolyte refining is not suitable for the extraction of mercury because mercury is in a liquid state at room temperature so it is quite difficult to make electrode of it to extract mercury from its solution.
It is used for metals like copper, silver, nickel, aluminum, zinc which are solid and can be used to make electrodes.

So, option $C$ is correct.