The working of a dry cell is based on - (1) Decomposition reaction (2) Spontaneous oxidation-reduction reaction (3) Combination reaction. (4) Electrolysis

The working of a dry cell is based on - (1) Decomposition reaction (2) Spontaneous oxidation-reduction reaction (3) Combination reaction. (4) Electrolysis
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(4) Electrolysis Explanation: A dry cell is a type of battery that uses a paste electrolyte, with only enough moisture to allow current to flow. It works in accordance with Faraday's law of electrolysis. It consists of an outer case made of zinc the negative electrode), a carbon rod in the center of the cell (the positive electrode), and the space between them is filled with an electrolyte paste.
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