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Impure aluminium is purified by :...

Impure aluminium is purified by :

A

Hoope's process

B

Hall's process

C

Serpeck's process

D

Baeyer's process

Text Solution

Verified by Experts

The correct Answer is:
A
Others are purification methods of bauxite ore.
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Answer the following question related with the isolation of aluminium from bauxite: Give the equation for the reaction which occurs at the anode when aluminium is purified by electrolysis.

The following is an extract from 'Metals in the Service of Man, Alexander and Street/Pelican 1976. 'Alumina (aluminium oxide) has a very high melting point of over 2000^@ C so that it cannot readily be liquefied. However, conversion of alumina to aluminium and oxygen, by electrolysis, can occur when it is dissolved in some other substance : Give the equation for the reaction which occurs at the anode when aluminium is purified by electrolysis.

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Name the process by while the impure ore of aluminium gets purified by using a conc. Soln. of an alkali.

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