Question

How do you make Chromium ?

Answer 1

The chromium can be obtained in following ways:

1. In order to obtain pure chromium, the oxide of chromium with the chemical formula ${\mathrm{Cr}}_2{\mathrm{O}}_3$ must be subjected to thermal reduction along with aluminium.
2. Alternately, a pure sample of this element can also be obtained via the electrolysis of solutions containing trivalent chromium.
3. It can also be noted that the thermal reduction process (usually referred to as the aluminothermic process for obtaining chromium) usually proceeds with the roasting of the finely divided chromium ore along with soda and lime at a temperature of $1100°\mathrm{C}$.
4. 
5. It can also be noted that this roasting process is carried out in the air.

The above points and chemical equation clearly explains the production of Chromium.