1.

During roasting of copperr pyrites the major reaction observed is ___________.

Answer»

`2FES + 3O_(2) to 2FeO + 2SO_(2)`
`CuFeS_(2) + 3O_(2) to FeO + CUO + SO_(2) UARR`
`CuFeS_(2) + O_(2) to Cu_(2)S + 2FeS + SO_(2) uarr`
`2CuS + 3O_(2) to 2CuO + 2SO_(2) uarr`

SOLUTION :To remove the volatile impurity


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