Question

Of the following, the that do not make use of the chemical effect of electric current is:

• A. electroplating
• B. electrotyping
• C. thermoelectric refigerator
• D. voltaic cells.

Answer 1

The correct option is C

thermoelectric refigerator

1. In electroplating, the electric current is passed into the solution, and the pure metal is deposited at the electrodes. it uses the chemical effect of electric current.
2. In electrotype and voltaic cells the current passed changes cause the chemical effect of electric current.
3. Thermoelectric refrigerators work on the principle of the Peltier effect, that is if an electric current is flown between two dissimilar metals then, their endpoints will have some temperature difference. It is not the chemical effect of electric current.

Hence option (C) is the correct option.