Smelting is the process of

A. Removing the impurities like clay, sand etc. from the iron ore by washing with water

B. Expelling moisture, carbon dioxide, sulphur and arsenic from the iron ore by heating in shallow kilns

C. Reducing the ore with carbon in the presence of a flux

D. All of the above

Answer: Option C

Solution(By Examveda Team)

Smelting is a process of applying heat to ore in order to extract out a base metal.
It is a form of extractive metallurgy.
It is used to extract many metals from their ores, including silver, iron, copper, and other base metals