Question

Calcination is used in metallurgy for removal of?
(a) Water and sulphide
(b) Water and CO₂
(c) CO₂ and H₂S
(d) H₂OandH₂S

Answer 1

Answer:

It involves removal of carbonate from ores...

So the answer is-

B)H2O and Co2

Answer 2

(b) Water and CO₂

Explanation:

Calcination is used in metallurgy for removal of H2O and CO₂. Calcination is process of heating of solids to a high temperature for the purpose of removing volatile substances, oxidizing a portion of mass, or rendering them friable. Calcination, therefore, is sometimes considered a process of purification. A typical example is the manufacture of lime from limestone.

Option B is the answer