Q.

Calcination is the process of heating the ore:

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a

in the presence of CaO and MgO

b

in the presence of air

c

in the absence of air

d

in inert gas

answer is C.

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Detailed Solution

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  • The concentrated ore is heated in absence of air to remove water or moisture from a hydrated oxide and CO2 from a carbonate ore at a temperature below their melting point. The mentioned process is called calcination and It is generally carried out in a reverberatory furnace.
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