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The reaction between calcium oxide and carbon dioxide forms a compound. What nature does this illustrate?

Answer and explanation

Correct answer: Reaction of a basic oxide with an acidic oxide

Calcium oxide is a metal oxide and behaves as a basic oxide. Carbon dioxide is a non-metal oxide and behaves as an acidic oxide. They undergo a combination reaction: CaO + CO₂ → CaCO₃. Calcium carbonate is a salt formed when the basic oxide neutralises the acidic oxide. Hence option A correctly describes the reaction; the other choices do not match the reactants or reaction type.

Related tags

Basic OxideAcidic OxideCalcium CarbonateNeutralisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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