Question

Which of the following options can be used as a reducing agent in smelting?

• A. Carbon
• B. Coke
• C. Carbon monoxide
• D. All of the above.

Answer 1

The correct option is D All of the above.

Smelting is the process in which the oxides of comparatively less reactive metals like zinc, iron, copper, lead, tin etc, are reduced to molten metal by using carbon, coke or carbon monoxide as the reducing agent.
For eg:- $ZnO+C{⟶}^{\left(heat\right)}Zn+CO\left(g\right)$