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Question

Cryolite is :

Options

A.Na3AlF6 and is used in the electrolysis of alumina for decreasing electrical conductivity.
B.Na3AlF6 and is used in the electrolysis of alumina for lowering the melting point of  alumina.
C.Na3AlF6 and is used in the electrolytic purification of alumina.
D.Na3AlF6 and is used in the electrolysis of alumina for increasing the melting point and electrical conductivity.

Solution

Cryolite is Na3AlF6 and is used in the electrolysis of alumina. It reduces the melting point of alumina and increase the electrical conductivity of electrolyte.

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