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Why is the conversion of copper oxide into copper called reduction?

Answer and explanation

Correct answer: Oxygen is removed

Copper oxide contains oxygen chemically combined with copper. When it changes into copper, that oxygen is removed from the compound, for example in CuO + H₂ → Cu + H₂O. Removal of oxygen is the traditional school-level definition of reduction. Addition of oxygen describes oxidation, while hydrogen removal and precipitate formation are not the defining features here. Therefore, option A is correct.

Related tags

ScienceClass10ReductionOxidationCopper-OxideRedoxChemical Reactions And EquationsChemical Substances – Nature And Behaviour

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