P-Block Elements Ques 30

Question: In the metallurgy of aluminium, cryolite is mixed in the molten state because it

[Roorkee 1995]

Options:

A) Increases the melting point of alumina

B) Oxidises alumina

C) Reduces alumina

D) Decreases the melting point of alumina

Show Answer

Answer:

Correct Answer: D

Solution:

Cryolite $ Na_3AlF_6 $ (1) Decreases the melting point of alumina (2) Increases conductivity of the solution



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