Question

For the metallurgical process of which of the ores calcined ore can be reduced by carbon?

• A. haematite
• B. calamine
• C. sphalerite
• D. iron pyrites

Answer 1

Answer: (A), (B)

calamine

Option (A):

Oxide ores are easily reduced by carbon. The haematite $\left(F{e}_2{O}_3\right)$ are oxide ores of carbon. So, it can be reduced by carbon.

Option (B):

Calamine $(ZnC{O}_3$) are oxide ores of zinc. So, it can be reduced by carbon.

Option (C):

Iron pyrites $(Fe{S}_2$)are sulfide ores of iron. It cannot be reduced by carbon.

Option (D):

Sphalerite $\left(ZnS\right)$ are sulfide ores of zinc. It cannot be reduced by carbon.

Hence, the correct options are (A) and (B).