1.

The slag obtained in extraction of copper pyrites is mainly

Answer»

`FeSiO_(3)`
`MnSiO_(3)`
`CaSiO_(3)`
`CuSiO_(3)`

Solution :(a) In extraction of copper, FeO is IMPURITY, which reacts with `SiO_(2)` as flux to form `FeSiO_(3)` as slag.
`FeO+SiO_(2)RARR FeSiO_(3)`
(c) If `SiO_(2)` is added in LARGE amount, then it is removed by CaO in the form of `CaSiO_(3)`.
`CaO+SiO_(2)rarr CaSiO_(3)`, (b) and (d) are not possible.


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