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In the reaction CuO + H₂ → Cu + H₂O, the substance that is reduced is:
AH₂
BCuO
CH₂O
DCu
Answer & Solution
Correct answer: B. CuO
CuO loses oxygen to become Cu, so CuO is reduced. H₂ gains oxygen to become H₂O, so H₂ is oxidised.
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