Class 12 Chemistry General Principles and Processes of Isolation of Elements Reduction to free Metal

Easy

The 'matte' is a mixture of ...... .

A
$Cu_2S + Fe_2S$
B
$CuS + FeS$
C
$Cu_2S + FeS$
D
$CuS + Fe_2S$

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Class 12 Questions

Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Reduction to free Metal

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Which of the following is $NOT$ a process used for the extraction of silver?

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$I$. $FeCr_2O_4 + NaOH + \text{air} \rightarrow Na_2CrO_4 + Fe_2O_3$
$II$. $Na_2CrO_4 + H_2SO_4 \rightarrow Na_2Cr_2O_7$
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