Class/Course - Class XII

Subject - Chemistry

Chapter - General Principles and Processes of Isolation of Elements


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Q.1 Consider the following statements:
Roasting is carried out to
1. Convert sulphide to oxide and sulphate
2. Remove water of hydration
3. Melt the ore
4. Remove arsenic and sulphur impurities
Of these statements:
  1, 2 and 3 are correct
  1 and 4 are correct
  1, 2 and 4 are correct
  2, 3 and 4 are correct.