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Which of the following reaction is both a displacement reaction and a redox reaction?

Answer and explanation

Correct answer: Zn + CuSO₄ → ZnSO₄ + Cu

In Zn + CuSO₄ → ZnSO₄ + Cu, zinc displaces copper from its salt, so it is a displacement reaction. Zinc changes from oxidation state 0 to +2 and loses electrons, while Cu²⁺ changes to Cu with oxidation state 0 and gains electrons. Thus it is also redox. Option D is redox but not displacement; B is decomposition and C is neutralisation.

Related tags

ScienceClass 10Displacement ReactionRedox ReactionOxidation StateChemical ReactionsChemical Reactions And EquationsChemical Substances – Nature And Behaviour

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