Which of following species is (are) desirable substance(s) in extraction of copper but not in extrac

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General Principles and processes of Isolation of Elements

hard

Which of the following species is (are) desirable substance(s) in extraction of copper but not in extraction of iron ?

A

$CaSiO_3$

B

$FeSiO_3$

C

$SiO_2$

D

coke

Solution

Haematite ore of iron contain $Si$ as impurity where it reacts with $O _2$ to produce $SiO _2$ which is further used in formation of slag.

But in extraction of copper $SiO _2$ is needed to form slag.

Standard 12

Chemistry

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