question_answer 87)

      Match the items of Column I and Column II.

Column 1	Column 11
A. Lechlanche cell   B.  Ni-Cd cell     C. Fuel ceil D. Mercury cell	1. Cell reaction  2. Does not involve any ion in solution and is used in hearing aids. 3. Rechargeable 4.  Reaction at anode,    5 .Converts energy of combustion into ' electrical energy

         

Answer:

                      A. ® (4)   B. ® (3)   C. ® (1,5)   D. ®(2) A. Lechlanche cell the electrode reaction occurs at Lechlanche cell are At anode  At cathode B. Ni-Cd cell is rechargeable. So, it has more life time. C. Fuel cell produces energy due to combustion. So, fuel cell converts energy of combustion into electrical energy e.g.,               D. Mercury cell does not involve any ion in solution and is used in hearing aids.