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Observe the circuit given in the figure.
 
Asset 10.png
 
Boojho set up this circuit for purification of copper. What will be the nature of
(a). plate A
(b). plate B
(c). and the solution. Explain the process of purification.
 
Plate A:
 
Plate B:
 
Solution:
 
We take as the solution and dip a pure copper plate as a and impure copper plate as the in it. The copper from the impure copper plate is transferred to the pure copper plate by electroplating and impurities deposit at the bottom. In this way, the copper plate becomes purified.