Question

When the sample of copper with zinc impurity is to be purified by

electrolysis, the appropriate electrodes of cathode and anode are

[AIEEE 2002]

• A. Pure zinc, Pure copper
• B. Impure sample, Pure copper
• C. Impure zinc, Impure sample
• D. Pure copper, Impure sample

Answer 1

The correct option is D

Pure copper, Impure sample

Impure metal made anode while pure metal made cathode.