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Why are oxidation and reduction understood together in a redox reaction?

Answer and explanation

Correct answer: What one substance loses, another substance can gain.

A redox reaction involves transfer of electrons between reacting species. When one substance loses electrons, it is oxidised; another substance must accept those electrons and is reduced. Thus the two processes occur simultaneously and are understood together. Option A expresses this conservation and transfer of electrons. Options B, C and D are incorrect because redox reactions involve chemical changes, not merely colour or physical changes.

Related tags

Redox ReactionsOxidationReductionElectron TransferChemical ReactionsChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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