Consider the following statements . Roasting is carried out to `:
Channel: Doubtnut
Date: 2020-04-05

Consider the following statements . Roasting is carried out to `:` `(i)` convert sulphide to oxide and sulphate. `(ii)` to remove impurities of `CuS` and `FeS` present in the ore of tin stone `(SnO_(2))` as `CuSO_(4)` and `FeSO_(4)`.  `(iii)` melt the ore.  `(iv)` remove arsenic and sulphur impurities.  of these statements.