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Science · 2025 · 2 marks
CBSE 2025 · Region 4 · Set 1 · Q21
Define oxidation. Identify and name the substance oxidised in the following reaction: CuO + H_2 → Cu + H_2 O
Define oxidation. Identify and name the substance oxidised in the following reaction : \[\mathrm{CuO}+\mathrm{H}_{2} \rightarrow \mathrm{Cu}+\mathrm{H}_{2} \mathrm{O} \]
Marking-scheme solution
Oxidation is the gain of oxygen by a substance or the loss of hydrogen from a substance/ loss of electrons.
Hydrogen / H2
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