Chemistry - Metallurgy Question with Solution | TestHub
ChemistryMetallurgyPurification of Ores, Calcination and roastingMedium2 minQB
ChemistryMediummultiple choice
Choose the correct option(s).
Options:(select one or more)
Answer:
C, D
Solution:
Option A is incorrect. In iron pyrite (FeS₂), iron is in the +2 oxidation state and sulfur is in the -1 oxidation state.
Option B is incorrect. Pitchblende (UO₂) is an oxide ore, while zinc blende (ZnS) is a sulfide ore.
Option C is correct. Impurities like S, As, and Sb are volatile and removed as elemental vapors during calcination.
Option D is correct. Malachite (Cu₂(CO₃)(OH)₂) is a copper ore, and froth flotation is suitable for concentrating many copper ores.
Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Purification of Ores, Calcination and roasting
⏱ 2mℹ️ Source: QB
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