Gujarati
Hindi
General Principles and processes of Isolation of Elements
easy

In which of the following metallurgy, self reduction is not possible :-

A

$ZnS \to Zn$

B

$PbS \to Pb$

C

$Cu_2S \to Cu$

D

$HgS \to Hg$

Solution

$2 P b S+3 O_{2} \rightarrow 2 P b O+2 S O_{2}$

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

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

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

Standard 12
Chemistry

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