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Extraction of Iron

Which metal i...

Question

Which metal is obtained by self reduction process?

A

Cu

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B

Pb

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C

Hg

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D

All of these

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Solution

The correct option is C All of these
$2 P b S + 3 O_{2} \to 2 P b O + 2 S O_{2}$

$P b S + 2 P b O \to 3 P b + S O_{2}$ (self reduction)

$C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}$

$H g S + 2 H g O \to 3 H g + S O_{2}$

So, all are the correct options.

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