Question

Extraction of metals from its ores present in the earth's crust

Answer 1

Metallurgy it is the answer and there are many types of it

Answer 2

The method used to extract metalsfrom the ore in which they are found depends on their reactivity. For example, reactive metals such as aluminium are extracted by electrolysis, while a less-reactivemetal such as iron may be extractedby reduction with carbon or carbon monoxide.