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In the electrolysis of alumina, cryolite...

In the electrolysis of alumina, cryolite is added to

A

lower the melting point of alumina

B

increase the electrical conductivity

C

minimise the anode effect

D

remove Impurities from alumina

Text Solution

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The correct Answer is:
A, B
In the electrolysis of alumina, cryollite is added to .
(a) to dissolve alumina .
(b) to decresse its melting point to about `950^(@) C`
(c ) to increase the conductivity of alumin.
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