Assertion (a): Electrolysis of aqueous solution of nacl gives chlorine gas at anode instead of oxygen gas.
Reason (r) : formation of oxygen gas at anode requires overpotential.
a. Both the Assertion and Reason are correct and related.
b. Both the Assertion and Reason are correct but not related.
c. The Assertion is correct, but the Reason is incorrect.
d. The Assertion is incorrect, but the Reason is correct.