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Metallurgy — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryMetallurgy2 Marks
Question
What do you observe when hydrogen is passed over heated copper oxide?
✓

Answer

Black copper oxide is reduced to brown/red.
$
CuO + H _2 \xrightarrow{\Delta} Cu + H _2 O
$

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