Among the following cells: (I) Leclanche cell (II) Nickel-Cadmium cell (III) Lead storage battery (IV)…
Among the following cells:
(I) Leclanche cell
(II) Nickel-Cadmium cell
(III) Lead storage battery
(IV) Mercury cell
primary cells are
I and II
I and III
II and III
I and IV
Solution
Primary cells are those cells, in which the reaction occurs only once and after use over a period of time, it becomes dead and cannot be reused again. e.g., Leclanche cell and mercury cell.