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Assertion: When an electric current is passed through the copper sulphate electrolyte, the impure copper anode gradually dissolve and pure copper is deposited on the cathode. Reason: Pure metals are deposited in electroplating techniques.

1. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
2. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
3. Assertion is true but Reason is false
4. Assertion is false but Reason is true E. Both Assertion and Reason are false

Correct answer: Both Assertion and Reason are true and Reason is the correct explanation of Assertion

Solution

In copper electrorefining, the impure copper anode dissolves into Cu²⁺ ions, and these ions gain electrons at the cathode to form pure copper. The reason is correct because electroplating/electrorefining deposits the pure metal from the electrolyte onto the cathode.

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