Question

Which of the following changes take place during roasting?
(i) Impurities are removed as their volatile oxides.
(ii) Ore is converted into its oxide.
(iii) Changes like oxidation, chlorination, etc. take place.

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (i) and (iii)
• D. (i), (ii) and (iii)

Answer 1

The correct option is D (i), (ii) and (iii)

In roasting, definite chemical changes like oxidation, chlorination, etc. take place. Impurities are removed in the form of corresponding volatile oxides.