Which one of the following materials conducts electricity?

Of the following,which cannot be obtained by electrolysis of the aqueous solution of their salts?

Assertion : On increasing dilution,the specific conductance keeps on increasing.
Reason : On increasing dilution,the degree of ionisation of a weak electrolyte increases and the number of ions per unit volume decreases.

How many minutes are required to deliver $3.21 \times 10^6$ Coulombs using a current of $500 \ A$ used in the commercial production of chlorine?

Which of the following is released at the cathode during the electrolysis of aqueous sodium chloride?

When sodium chloride solution is electrolysed,the gas that is liberated at the cathode is