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 _________ .