In a galvanic cell:

Chemical reaction produces electrical energy

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Electrical energy produces chemical reaction

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Reduction occurs at anode

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Oxidation occurs at cathode

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Solution

The correct option is A Chemical reaction produces electrical energy
In galvanic cell, an electrochemical cell, electrical energy is produced due to some chemical reactions occuring at anode and cathode. Oxidation occurs at anode, while reduction occurs at cathode. The overall reaction is spontaneous in galvanic cell.

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C u - Z n

The following are some statements about electrolysis:

I) Involves flow of electrons from anode to cathode

II) Involves no chemical reaction at electrodes

III) Oxidation occurs at anode and reduction at cathode

IV) Anions migrate towards cathode

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