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A metal oxide is added to an acid and salt and water are formed. What type of reaction is this?

Answer and explanation

Correct answer: Neutralisation-like reaction

The governing concept is acid–base neutralisation. Most metal oxides are basic oxides, so they react with acids to produce a salt and water. For example, copper(II) oxide reacts with hydrochloric acid: CuO + 2HCl → CuCl₂ + H₂O. The formation of salt and water identifies option A. Photosynthesis, evaporation, and condensation do not describe this chemical change.

Related tags

Metal OxideAcid-Base ReactionNeutralisationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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