Question

During the refining of an impure metal by electrolysis, the pure metal is a deposited ______.

Options

• at cathode

• on the walls of electrolytic tank

• at anode

• at the bottom of electrolytic tank

Answer 1

During the refining of an impure metal by electrolysis, the pure metal is a deposited at cathode.

Explanation:

During electrolytic refining, positively charged metal ions (Mⁿ⁺) in the electrolyte solution are attracted to the negatively charged cathode. At this electrode, the metal ions gain electrons (reduction) and are deposited as pure metal atoms. Conversely, the impure metal block serves as the anode and slowly dissolves into the solution during the process.