Write down the chemical equations for metallurgical process to represent
Roasting of galena (PbS)
Chemical equation:
$2 P b S + 3 O_{2} \to 2 P b O + 2 S O_{2}$
$P b S + 2 O_{2} \to P b S O_{4}$ .
If true enter 1 else 0.

1

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Solution

The correct option is A 1
Roasting of galena (PbS):
The concentrated ore is roasted at a moderate temperature in a reverberatory furnace and in a limited supply of air.
The balanced chemical equations are as given below.
$2 P b S + 3 O_{2} \to 2 P b O + 2 S O_{2} ↑$
$P b S + 2 O_{2} \to P b S O_{4}$ .

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