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Q.
Consider the following statements
Roasting is carried out to
1. Convert sulphide to oxide and suphate.
2. Remove water of hydration.
3. Melt the ore.
4. Remove arsenic and sulphur impurities.
Of these statements
(a)1, 2 and 3
(b)1 and 4
(c)1, 2 and 4 Right sign
(d)2, 3 and 4
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