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Question

What is the chemical composition of 'slag' formed during smelting in the extraction of copper?

A
Cu2SiO3
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B
FeSiO3
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C
CuFeS2
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D
CuSiO3
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Solution

The correct option is B FeSiO3
Slag is FeSiO3 which is formed in blast furnace when SiO2 is added as flux to the FeO produced after roasting of ore.

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