🔬 Science & TechnologyUPSC 2009Space & Space Technology

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

aAmmonium chloride and Zinc chloride
bSodium chloride and Calcium chloride
cMagnesium chloride and Zinc chloride
dAmmonium chloride and Calcium chloride
✓ Correct answer: a) Ammonium chloride and Zinc chloride
ExplanationAmmonium chloride (NH4Cl) is a primary component of the electrolyte paste used in dry cells.Zinc chloride (ZnCl2) serves as the negative electrolyte, and it is often mixed with ammonium chloride in a paste to form the electrolyte for the dry cell.These components, along with a zinc anode and a carbon cathode, are commonly used in the construction of dry cells, which power small devices such as flashlights and radios.299

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