Roasting is usually performed in :

Blast furnace

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Reverberatory furnace

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Bessemer's converter

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Electric furnace

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Solution

The correct option is B
Reverberatory furnace
Roasting: 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. Some of the reactions involving sulphide ores are:
$2 Z n S + 3 O_{2} \to 2 Z n O + 2 S O_{2} 2 P b S + 3 O_{2} \to 2 P b O + 2 S O_{2} 2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2}$
The sulphide ores of copper are heated in reverberatory furnace.

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Roasting is done generally in case of the

700^{\circ}

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