Question

Differentiate between a primary cell and a secondary cell.

Answer 1

Primary cell	Secondary cell
1.Energy density of primary cells is very high.	1.Whereas that of secondary cells is very low.
2.In primary cells there is no fluid present.	2.Whereas secondary cells are wet.
3.The internal resistance of primary cells is very high.	3.The internal resistance of secondary cells is low.
4.The type of chemical reaction in primary cells is irreversible.	4.The chemical reaction in secondary cells is reversible.
5.Primary cells are cheap.	5.Secondary cells are expansive in comparison.