Chemistry - Metallurgy Question with Solution | TestHub
ChemistryMetallurgyPurification of Ores, Calcination and roastingEasy2 minPYQ_2020
ChemistryEasysingle choice
Consider the following statements :
Roasting is carried out to :
1.Convert sulphide into oxide
2.Melt the ore
3.Remove moisture, water of hydration and expel organic matter
4.Remove sulphur and arsenic in the form of volatile oxides
Out of these statements :
Options:
Answer:
A
Solution:
Roasting is heating in presence of air below melting point to convert sulphide ores into oxides. Impurities like S, As, P are removed as volatile oxides.
Stream:NTA_ABHYAS_NEETSubject:ChemistryTopic:MetallurgySubtopic:Purification of Ores, Calcination and roasting
⏱ 2mℹ️ Source: PYQ_2020
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