Which of the following metals (s) is/are commercially extracted by self reduction method from their corresponding ore?

C u

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F e

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P b

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H g

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Solution

The correct options are
A $C u$
C $P b$
D $H g$
Copper, lead and mercury are commercially extracted by self reduction method from their corresponding ore.
For example, the commercial metallurgical process for the formation of metallic copper from the sulphide ore involves oxidation of $C u_{2} S$ to $C u_{2} O$ and auto reduction of a mixture of $C u_{2} S$ and $C u_{2} O$ to copper metal.
$C u_{2} S + \frac{3}{2} O_{2} \to C u_{2} O + S O_{2}$
$2 C u_{2} O + C u_{2} S \to 6 C u + S O_{2}$

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Similar questions

F e_{2} O_{3}, S n O_{2}, P b S, M g C l_{2}, H g S, Z n S, A l_{2} O_{3}, A g_{2} S, C u_{2} S

(\frac{Q + R}{P \times S})

How many of the following metals are extracted by self reduction process?
$P b, A u, M g, S n, F e, A l, A g, H g, N a, Z n, C u, C a$

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