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Metallurgy — Chemistry STD 10 — Question

ICSE BoardEnglish MediumSTD 10ChemistryMetallurgy2 Marks
Question
Carbon can reduce lead oxide but not aluminium oxide ?
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Answer

Aluminium has a great affinity towards oxygen and so cannot be reduced by carbon or carbon monoxide or hydrogen whereas lead oxide can be easily reduced to metal lead by carbon.
$
PbO + C \longrightarrow Pb + CO
$

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