Practice question

MCQ

Question

Which reaction involves a redox process where the oxidizing agent loses oxygen without electron transfer to a metal?

Choose one · Correct answer highlighted

SO₃ + S → 2SO₂ Correct Fe₂O₃ + 3C → 2Fe + 3CO MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O CuO + H₂ → Cu + H₂O

In SO₃ + S → 2SO₂, SO₃ (S: +6 to +4) loses oxygen and is reduced, oxidizing S (0 to +4), no metal involved.

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