Question

In the given arrangement, if we replace the copper plate connected to the negative terminal of the battery with a carbon rod, which of the following happens?

• A. One of the above happens based on thickness of the rods
• B. Carbon get coated on copper rod
• C. Copper get coated on carbon rod
• D. No coating happens

Answer 1

The correct option is C

Copper get coated on carbon rod

If we place a carbon rod instead of the copper plate which was connected to the negative terminal of the battery, we obtain a coating of copper on the carbon rod. The copper ions from the solution (copper sulphate) get deposited on the electrode (carbon rod).