Ans. The process
of extraction of metals from their ores, refining, and alloying them is called
metallurgy. The three important steps involved in the extraction of metals from
their ores are:
- Preliminary treatment: - In the preliminary treatment, the gangue is removed to concentrate the ore.
- Chemical reduction: - The reduction can be brought about in two ways:
- The reducing agent reduces the metal oxide to metal.
- The reduction by electrolysis.
- Refining: - The metal obtained by chemical reduction contains impurities. The impure metal is purified.
