Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milliampere current. The time required to liberate 0.01 mol of H2 gas at the cathode is (1 faraday = 96500 C mol–1)
(1) 9.65 × 104 s
(2) 19.3 × 104 s
(3) 28.95 × 104 s
(4) 38.6 × 104 s