In a dry cell (battery), which of the following are used as electrolytes?

1. Ammonium chloride and Zinc chloride
2. Sodium chloride and Calcium chloride
3. Magnesium chloride and Zinc chloride
4. Ammonium chloride and Calcium chloride

Explanation

Option (a) is correct

• A dry cell (Leclanché cell) uses a paste-like electrolyte, not a liquid. The electrolyte consists mainly of ammonium chloride (NH₄Cl) paste. Zinc chloride (ZnCl₂) is also added to improve the cell’s performance and reduce polarisation. Other salts like sodium chloride, calcium chloride, or magnesium chloride are not used as electrolytes in dry cells.

Answer: (a): Ammonium chloride and Zinc chloride