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Removal of hydrogen from a substance and addition of hydrogen to a substance indicate which processes, respectively?

Answer and explanation

Correct answer: Oxidation and reduction

In the hydrogen-based description of redox reactions, removal of hydrogen is oxidation, while addition of hydrogen is reduction. Therefore, the two processes in the stated order are oxidation followed by reduction. This is consistent with the broader electron-transfer idea: oxidation involves loss of electrons and reduction involves gain. Option B reverses the sequence; C and D name unrelated reaction types.

Related tags

ScienceClass10Redox-ReactionOxidationReductionHydrogen-TransferChemical Reactions And EquationsChemical Substances – Nature And Behaviour

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