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Question
The process of converting hydrated alumina into anhydrous alumina is called ____________.
The process of converting hydrated alumina into anhydrous alumina is called ____________.
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Solution
The correct option is A calcination
In calcination, the ore is heated in absence of air to remove impurities like sulphur dioxide, carbon dioxide, and moisture. Thus, it is used to convert hydrated alumina into anhydrous alumina.In roasting, the ore is heated in a regular supply of air in a furnace at a temperature below the melting point of the metal. This method is generally used for sulphide ore.
In calcination, the ore is heated in absence of air to remove impurities like sulphur dioxide, carbon dioxide, and moisture. Thus, it is used to convert hydrated alumina into anhydrous alumina.
In roasting, the ore is heated in a regular supply of air in a furnace at a temperature below the melting point of the metal. This method is generally used for sulphide ore.Suggest Corrections
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