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Which reaction shows the reaction between an acidic oxide and a base?

Answer and explanation

Correct answer: Carbon dioxide and calcium hydroxide

The governing concept is neutralisation between an acidic oxide and a base. Carbon dioxide, CO₂, is an acidic oxide, while calcium hydroxide, Ca(OH)₂, is a base. They react as CO₂ + Ca(OH)₂ → CaCO₃ + H₂O, producing calcium carbonate and water. Thus option A directly represents the required reaction. The other choices show metal–water, metal–acid, and combination reactions, not acidic oxide–base neutralisation.

Related tags

Acidic-OxideBaseNeutralisationAcids-Bases-SaltsAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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