Name the following:
A gas other than oxygen obtained at the anode during electrolytic reduction of fused alumina `[Al_2 O_3]`

Explain the following: A neutral gas other than oxygen is formed at the anode during electrolysis of fused alumina.

Give reason why : Is a neutral gas other than oxygen formed at the anode during electrolysis of fused alumina ?

Name the following : The non-metal which forms the anode during electrolytic reduction of fused alumina in Hall Heroult's process.

Name the compound added to pure alumia to lower the fusion temperature during the electrolytic reduction of alumina.

Name the gas evolved when : Alumina undergoes electrolytic reduction.

Name the gas that is produced in the following case : At the anode during the electrolysis of acidified water.

A metal carbonate X on reacting with an acid gives a gas which when passed through a solution Y gives the carbonate back. On the other hand, a gas G that is obtained at anode during electrolysis of brine is passed on dry, it gives a compound Z, used for disinfecting drinking water . Identify X,Y,G and Z.

Write the chemical reactions which take place in the following operations : Electrolytic reduction of Al_2O_3

In the electrolytic reduction of pure Al_2O_3 . Fluorspar (CaF_2) is added to

State the electrode reaction at the respective electrodes during extraction of Al from Al_(2)O_(3)