Match the items of Column I and Column II.
| Column I | Column II |
| i) Lechlanche cell | (a) cell reaction |
| ii) Ni-Cd cell | (b) does not involve any ion in solution and is used in hearing aids. |
| iii) Fuel cell | (c) rechargeable |
| iv) Mercury cell | (d) reaction at anode, |
| (e) converts energy of combustion into electrical energy. |