Which of the following statements is/are false: a. In a solid like copper metal, electricity is carried by electrons but in a liquid like copper sulphate solution, electricity is carried by copper and sulphate ions. b. If electricity is passed through a solid or a liquid, then no chemical change takes place. c. The liquids which conduct electricity are called conducting liquids.

Statement ‘b’ is a false statement. Thus, it is the correct option. If electricity is passed through a solid, then no chemical change takes place. But, when electricity is passed through a liquid, then a chemical change takes place. For example, when electricity is passed through a copper wire, no chemical change takes place in it but when electricity is passed through acidified water, then a chemical change takes place in which water is decomposed into hydrogen and oxygen gases.