Question

Question 4

When the electric current is passed through a conducting solution, there is a change of colour of the solution. This indicates

(a) the chemical effect of current.
(b) the heating effect of current.
(c) the magnetic effect of current.
(d) the lightning effect of current.

Answer 1

The answer is (a).
The passage of an electric current through a conducting solution causes chemical reactions. As a result, change of colour of solution occurs. This indicates the chemical effect of current.