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Question
Heating the metallic ore in the presence of excess air is known as __________.
Heating the metallic ore in the presence of excess air is known as __________.
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Solution
The correct option is A Roasting
Heating the ore in absence of air below the melting point of the ore is calcination.
Heating the ore in presence of excess air below the melting point is called roasting.
The sulphide ores are converted to the respective oxides and volatile impurities are removed during roasting.
Roasting is a process in metallurgy in which a sulfide ore is heated in air.
The process may convert a metal sulfide to a metal oxide or to a free metal.
Option B is correct.
Heating the ore in absence of air below the melting point of the ore is calcination.
Heating the ore in presence of excess air below the melting point is called roasting.
The sulphide ores are converted to the respective oxides and volatile impurities are removed during roasting.
Roasting is a process in metallurgy in which a sulfide ore is heated in air.
The process may convert a metal sulfide to a metal oxide or to a free metal.
Option B is correct.
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