In a dry cell (battery), which of the following are used as electrolytes?
- AAmmonium chloride and Zinc chlorideCorrect
- BSodium chloride and Calcium chloride
- CMagnesium chloride and Zinc chloride
- DAmmonium chloride and Calcium chloride
Explanation
The correct answer is A. In a standard Leclanche dry cell, the electrolyte is a moist paste consisting of ammonium chloride and zinc chloride. Ammonium chloride serves as the primary salt that facilitates the flow of ions between the electrodes. Zinc chloride is added to the mixture to maintain moisture and to help prevent the buildup of ammonia gas, which can interfere with the chemical reaction and increase internal resistance. Together, these two compounds allow the battery to generate electricity efficiently in a dry format.
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