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

Answer: (D)

(i), (ii) and (iii)

Answer 2

In roasting, definite chemical changes like oxidation chlorination, etc. take place impurities are removed