Correct answer: (B) Charging a rechargeable battery
Explanation
An electrolytic cell uses an external power source to drive a nonspontaneous redox process. Charging a rechargeable battery reverses its spontaneous discharge reaction using supplied electrical energy, so B. Discharge, spontaneous corrosion and sacrificial protection instead derive current from favourable redox reactions.
More Electrochemistry questions
GATE 2020 MT Q38– A Zn–Fe galvanic cell has E0 Zn2+/Zn=-0.76 V and E0 Fe2+/Fe=-0.44 V, and spontaneously…
GATE 2026 MT Q64– Al 2O 3 can be electrolyzed with an inert or a carbon anode. The overall reactions are: I,…
GATE 2025 MT Q55– For Mg+Cd2+Mg2++Cd, the standard Gibbs free energy change is kJ (rounded to an integer).…
GATE 2024 MT Q57– At 298 K, the Cu2+ concentration needed to make the potential of pure copper 0.17 V is…
GATE 2023 MT Q62– An aqueous solution contains Fe2+ at 10-4 M, 298 K, and atmospheric pressure. The iron…
GATE 2022 MT Q49– The cell Au–Pb(liquid) PbCl 2–KCl(liquid) Cl 2(gas, 0.5 atm), C(graphite) has emf 1.2327 V…