What chemical process is used for obtaining a metal from its oxide?

Explanation

The chemical process is known as reduction. Reduction can be done either by heating with carbon or by using highly reactive metals such as Na, Ca, Al, etc. e.g.,
`ZnO_((s)) + C_((s)) to Zn_((s)) + CO_((g))`
`3MnO_(2(s)) + 4Al_((s)) to 3Mn_((l)) + 2Al_(2)O_(3(s)) + "heat"` THis reaction is highly exothermic.