Practice question

MCQ

Question

Which reaction represents a decomposition redox process?

Options

Choose one · Correct answer highlighted

CaCO₃ → CaO + CO₂ 2Ag₂O → 4Ag + O₂ Correct NH₄Cl → NH₃ + HCl Na₂CO₃ → Na₂O + CO₂

Explanation

In 2Ag₂O → 4Ag + O₂, Ag (+1) is reduced to 0, and O (-2) is oxidized to 0.

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