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In which electrochemical cell, exothermic changes occur?

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In which electrochemical cell, exothermic changes occur?

(a) Electrolysis cell

(b) Volatile cell

(c) Fuel cell

(d) Conventional cell

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The correct option is (b) Volatile cell

Explanation: Electrolysis cell uses electrical energy to produce endothermic chemical changes, fuel cell and conventional cells  provide endothermic change while volatile cell uses exothermic chemical reactions to produce electrical energy.

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