Chemistry - Metallurgy Question with Solution | TestHub
ChemistryMetallurgyPurification of Ores, Calcination and roastingMedium2 minQB
ChemistryMediummultiple choice
Choose the correct option(s) from the following regarding roasting process involved in metallurgical processes.
Options:(select one or more)
Answer:
A, B, D
Solution:
Roasting is heating an ore (usually sulfide) in air below its melting point to convert it to its oxide. This exothermic process removes volatile impurities like arsenic and sulfur as their oxides.
A. Correct. Roasting converts sulfide ores to oxides.
B. Correct. Oxidation reactions are typically exothermic.
C. Incorrect. While primarily for sulfide ores, it can be applied to other ores containing volatile impurities.
D. Correct. Volatile impurities like S, As, Sb are oxidized and removed.
Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Purification of Ores, Calcination and roasting
⏱ 2mℹ️ Source: QB
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