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Answer: 1. The anode is an electrode through which the current enters the electrolytic cell.
2. cathode
The electrode which is connected to the positive terminal of the cell or battery is called the anode. The electrode which is connected to the negative terminal of the battery is called the cathode. Let us examine what happens when two copper electrodes are used in a solution of copper sulphate.
3. electro-refining
The process used in purifying metals by electrolysis is called electro-refining.
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