Answer and explanation

Correct answer: A. The positive electrode, where oxidation occurs

  1. Step 1: In electrolysis the anode is positive and oxidation always happens at the anode.
Answer
The positive electrode, where oxidation occurs.
Why not the others: The negative electrode, where reduction occurs, The positive electrode, where reduction occurs and The negative electrode, where oxidation occurs do not fit.

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Which electrode is the… | Wazari Exam (Iraq Baccalaureate) - Scientific Branch