Practice question

MCQ

Question

Which of the following is a redox reaction involving combination?

Options

Choose one · Correct answer highlighted

N₂ + O₂ → 2NO Correct CaO + CO₂ → CaCO₃ HCl + NH₃ → NH₄Cl NaOH + H₂SO₄ → Na₂SO₄ + H₂O

Explanation

In N₂ + O₂ → 2NO, N (0 to +2) is oxidized, and O (0 to -2) is reduced, forming one product.

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