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The addition of silica during the extraction of copper from its sulphide ore [JEE Main 2021, 27 Jul (Shift 2)]

Q1

The addition of silica during the extraction of copper from its sulphide ore

[JEE Main 2021, 27 Jul (Shift 2)]

a

reduces copper sulphide into metallic copper

b

reduces the melting point of the reaction mixture

c

converts copper sulphide into copper silicate

d

converts iron oxide into iron silicate

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