Q.

Select the correct statement:

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a

Calcination and roasting take place in reverberatory furnace, and small roasting takes place in small blast furnace

b

Calcination and roasting take place only in small blast furnace

c

Calcination and roasting take place only in reverberatory furnace

d

All are correct

answer is A.

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Detailed Solution

All these are pyrochemical processes. So they occur in furnaces. Calcination and Roasting occur in reverberatory furnace which is in the shape of horizontal 'S' and available with or without O2​. But in small roasting, minimum amount of O2 is required. So it takes place in Blast Furnace.
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