Iron is extracted from magnetite by reduction with

Write the chemical reactions involved in the extraction of gold by the cyanide process. Also,explain the role of zinc in this extraction.

The metal extracted by the electrolysis of its fused salt is

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

The temperature at which carbon reduces $FeO$ into iron and produces $CO$ is:

Aluminium has a great affinity for oxygen and its oxidation is an exothermic process. This fact is made use of in