Multiple choice

Which of the following statements is true for the purification of copper?

  1. A pure copper rod is connected to the positive terminal of the battery and copper sulphate solution is the electrolyte.

  2. A pure copper rod is connected to the positive terminal of the battery and distilled water is the electrolyte.

  3. An impure copper rod is connected to the positive terminal of the battery and salty water is the electrolyte.

  4. An impure copper rod is connected to the positive terminal of the battery and copper sulphate solution is the electrolyte.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the purification of copper, an impure copper rod is connected to the positive terminal, pure copper rod is connected to the negative terminal and an aqueous solution of a copper salt, usually copper sulphate, is used.

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