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Following flow diagram represent the ext...

Following flow diagram represent the extraction of aluminium form bauxite.

The purpose of adding cryolite is :

A

To increase the electrical conductivity of pure aluminium

B

To lower the melting point of `Al_2O_3`

C

To remove the impurities as slag

D

To increase the aluminium percentage in the yield

Text Solution

Verified by Experts

The correct Answer is:
B
True statement : Melting point of the compound `(Al_2O_3)` decreases when some other substance (cryolite) is added as impurity.
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