Chemistry - Metallurgy Question with Solution | TestHub
ChemistryMetallurgyEllingham diagram & Reduction methods, Refining of metalMedium2 minQB
ChemistryMediummultiple choice
Which of the following statements are NOT correct ?
Options:(select one or more)
Answer:
B, C
Solution:
(A) Copper is extracted by self-reduction from sulfide ores like copper pyrites.
(B) Cast iron is not the purest form of iron; it contains about 2–4% carbon and other impurities.
(C) Malachite formula is CuCO₃·Cu(OH)₂ (or Cu₂CO₃(OH)₂), not Cu(OH)₂·2CuCO₃.
(D) Cupellation is used for refining silver and gold.
NOT correct statements = B, C
Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Ellingham diagram & Reduction methods, Refining of metal
⏱ 2mℹ️ Source: QB
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