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Smelting

The metal who...

Question

The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction ___________. $(F e / M g / P b / A l)$ .

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Solution

The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction Pb.
Amphoteric substances reacts with acids as well as bases.
$P b O + 2 H N O_{3} \to P b (N O_{3})_{2} + H_{2} O$
$P b O + 2 N a O H \to N a_{2} P b O_{2} + H_{2} O$
On heating with carbon, $P b O$ is reduced to Pb.
$P b O + C \to P b + C O$
$P b O + C O \to P b + C O_{2}$

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