1.

Cryolite is:A. `Na_(3)A1F_(6)`and is used in the electroysis of alumina for decreasing electrial conductivity.B. `Na_(3)A1F_(6)` and is used in the electroysis of alumina for lowering the melting point of alumina.C. `Na_(3)A1F_(6)`and is used in the electroytic purification of alumina.D. `Na_(3)A1F_(6)`and is used in the electroysis of alumina for increasing the melting point and electrical conductivity.

Answer» Correct Answer - B
Cryolite is `Na_(3)A1F_(6)` and is used in the electroysis of alumina. It reduces the melting point of alumina and increase the electrical conductivity of electrolyte.


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