Alumino-thermic process is used for the metallurgy of:

Considering the Ellingham diagram,which of the following metals can be used to reduce alumina $(Al_2O_3)$?

Chromium is obtained by reducing concentrated chromite ore with

Extraction of a metal $(M)$ from its sulfide ore $(M_2S)$ involves the following chemical reactions:
$2M_2S + 3O_2 \xrightarrow{\text{heat}} 2M_2O + 2SO_2 \uparrow$
$M_2S + 2M_2O \xrightarrow{\text{heat}} 6M + SO_2 \uparrow$
The metal $(M)$ may be

In the extraction of copper from its sulphide ore,metal is finally obtained by the oxidation of cuprous sulphide with

Explain the reduction process involved in the extraction of zinc.