Solution

The passage of an electric current through a conducting liquid causes Chemical reactions. As a result of the chemical reaction:

• Bubbles of a gas may be formed on the electrodes

• Deposits of metal can be seen on electrodes

• Changes of colour of solutions may occur

        All the above changes or the reaction will depend on what solution & electrodes are used. It is also interesting to note here, that chemical reactions can be seen taking place in vegetables & fruits like if we insert copper wire into potato, we find that the wire connected to the positive terminal has a greenish blue spot around it.