Assertion (A): Copper sulphate conducts electricity in the molten state but not in the solid state.
Reason (R): Copper and sulphate ions are fixed in the lattice in molten state, while in solid state they can move freely.
Choose the correct option:
(a) Both (A) and (R) are true, and (R) is the correct explanation of (A).
(b) Both (A) and (R) are true, but (R) is not the correct explanation of (A).
(c) (A) is true but (R) is false.
(d) (A) is false but (R) is true.
(c) (A) is true but (R) is false.
Explanation: Because of the ionic nature, copper sulphate conducts electricity in the molten state but not in the solid state. In the molten state, the ions are free to move and carry electric current, whereas in the solid state, the ions are fixed in their positions.
