Multiple choice general knowledge

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
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A Correct answer
Explanation

A standard dry cell (Leclanché cell or zinc-carbon battery) uses ammonium chloride (NH4Cl) and zinc chloride (ZnCl2) as the primary electrolytes. The ammonium chloride solution provides the conductive medium, while zinc chloride helps maintain the electrolyte's conductivity and reduces the formation of hydrogen gas on the zinc electrode. The other combinations are incorrect - sodium chloride is used in some wet cells, magnesium chloride is not standard in dry cells, and calcium chloride is not a typical dry cell electrolyte.

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