Fill in the blanks.

(a) Most liquids that conduct electricity are solutions of ______ , ______ and ______

(b) The passage of an electric current through a solution causes _______ effects.

(c) If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ________ terminal of the battery.

(d) The process of depositing a layer of any desired metal on another material by means of electricity is called _______