Chemistry - Metallurgy Question with Solution | TestHub
ChemistryMetallurgyPurification of Ores, Calcination and roastingMedium2 minQB
ChemistryMediumsingle choice
When roasting is carried out :
(i) Sulphide ore is converted into oxide and sulphate
(ii) remove water of hydration
(iii) the ore melts
(iv) arsenic and sulphur impurities are removed of these statements :
Options:
Answer:
C
Solution:
Roasting is process in which ore is heated generally in the presence of air at temperature below their meting points.
Mainly applicable for sulphide ores to get their corresponding metal oxides Sulphur and arsenic are removed in the form of volatile oxides. So statement (i), (ii) and (iv) are correct.
Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Purification of Ores, Calcination and roasting
⏱ 2mℹ️ Source: QB
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