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

Dry cell batteries (Leclanche cells) use a paste of ammonium chloride (NH4Cl) as the primary electrolyte, often with zinc chloride (ZnCl2) added to reduce polarization and improve performance. Sodium chloride, magnesium chloride, and calcium chloride are not used in standard dry cells - they would not provide the right electrochemical properties.

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