Question

When an impure copper rod acts the anode and the pure copper rod acts as the cathode in an electrolysis experiment, then which of the following occurs?

• A. The pure copper cathode decreases in size and the impure copper anode increases in size
• B. The pure copper cathode increases in size and the impure copper anode decrease in size
• C. Both of the anode and the cathode remains same in size
• D. None of these.

Answer 1

The correct option is B The pure copper cathode increases in size and the impure copper anode decrease in size

When an electric current is passed through the electrolyte, the angle anode gradually dissolves and pure copper is deposited on the cathode which gradually grows in size.

So option B is the correct answer