An electrochemical cell is a device which converts chemical energy into electrical energy in a/an _____.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. indirect redox reaction.
An electrochemical cell is a device that converts chemical energy into electrical energy in an indirect redox reaction. In this process, oxidation and reduction reactions occur at separate locations, typically at the anode and cathode. The electrons flow through an external circuit, generating an electric current, while the ionic movement occurs within the electrolyte. This indirect redox reaction enables the cell to harness chemical reactions to produce electrical energy efficiently, as seen in devices like batteries and fuel cells.