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Chemistry

Grade-10

Easy

Question

What is the function of cryolite?

It increases the conductivity
It decreases the conductivity
It remains constant
It decreases the melting point

hint Hint:

Cryolite is used in the electrolytic extraction of aluminium to lower the melting temperature of the mixture to about 1140 K.

The correct answer is: It increases the conductivity

Cryolite is a salt of sodium aluminium hexafluoride. It is represented as Na3AlF6. It consists of Aluminium, Sodium and Fluorine

Cryolite is used in the electrolytic extraction of aluminium to lower the melting temperature of the mixture to about 1140 K. Cryolite increases the electrical conductivity of the mixture.

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