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Extraction of aluminium can be understoo...

Extraction of aluminium can be understood by :

Electrolytric reduction of `Al_(2) O_(3)` :
Electrolysis : `Al_(2) O_(3) + Cryolite + CaF_(2)`
Cathode : Carbon inside the `Fe` container
Anode : Graphite rods.
The function of fluorspar `(CaF_(2))` is.

A

To increase the melting point of electrolyte

B

To increase electrolytic conductivity power

C

To remove the impurities as slag

D

All of these

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The correct Answer is:
B
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Extraction of aluminium can be understood by : Electrolytric reduction of Al_(2) O_(3) : Electrolysis : Al_(2) O_(3) + Cryolite + CaF_(2) Cathode : Carbon inside the Fe container Anode : Graphite rods. The purpose of adding cryolite is.

Extraction of aluminium can be understood by : Electrolytric reduction of Al_(2) O_(3) : Electrolysis : Al_(2) O_(3) + Cryolite + CaF_(2) Cathode : Carbon inside the Fe container Anode : Graphite rods. The molten electrolytes contain Na^(oplus),Al^(3+) and Ca^(2+) but only Al gets deposited at cathode because,

Extraction of aluminium can be understood by : Electrolytric reduction of Al_(2) O_(3) : Electrolysis : Al_(2) O_(3) + Cryolite + CaF_(2) Cathode : Carbon inside the Fe container Anode : Graphite rods. Coke power is spread over the molten electroltyte to.

Extraction of aluminum can be understood by The function of fluorspar (CaF_(2)) is :

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

In the extraction of aluminium by Hall-Heroult process purified Al_(2)O_(3) is mixed with CaF_(2) to

Why Al_(2)O_(3) is amphoteric while B_(2)O_(3) is acidic ?

What is the nature of Al_(2)O_(3) and B_(2)O_(3) ?

Incorrect statement in electrolysis of Al_(2)O_(3) by Hall-Heroult process is :

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