Hall-Heroult process is used for the extraction of

H g

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C u

No worries! We‘ve got your back. Try BYJU‘S free classes today!

A l

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Z n

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $A l$
In the metallurgy of aluminium, purified $A l_{2} O_{3}$ is mixed with $N a_{3} A l F_{6}$ or $C a F_{2}$ which lowers the melting point of the mix and brings conductivity. The fused matrix is electrolysed. Steel vessel with lining of carbon acts as cathode and graphite anode is used. The overall reaction may
be written as:

$2 A l_{2} O_{3} + 3 C \to 4 A l + 3 C O_{2}$

This process of electrolysis is widely known as Hall-Heroult process.

Suggest Corrections

Similar questions

Hall-Heroult process is used for the extraction of …….

Q. In the context of Hall-Heroult process for the extraction of Aluminium, which of the following statement is false?

Q. In the context of the Hall - Heroult process for the extraction of Al, which of the following statements is false?

In the extraction of aluminium by Hall-Heroult process, purified Al2O3 is mixed with CaF2 to

Consider the following statements about the extraction of aluminium:

P: Bauxite ore is used for the extraction of aluminium.
Q: KCl used to leach alumina from bauxite in Bayer's process.
R: In Hall-Heroult process, aluminium is obtained at the cathode.

Which of the following statements are true?

Join BYJU'S Learning Program