Reduction of metal oxides by carbon is suitable for
AVery reactive metals like sodium and potassium
BModerately reactive metals like iron and zinc
CNoble metals like gold and platinum only
DMetals like aluminium and magnesium only
Answer & Solution
Correct answer: B. Moderately reactive metals like iron and zinc
1. Activity series guides the choice of reducing agent.
2. Carbon can reduce oxides of moderate metals like Fe, Zn, Pb.
3. Very reactive metals need electrolysis instead.
4. So option A is correct.
_Source: Selina Concise Chemistry Class 10, Ch 7 Metallurgy (Mistral OCR'd PDF), section on reduction by carbon_
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