In the electrolysis of alumina to obtain aluminiumb metal, cryolite is – McqOptions

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1.	In the electrolysis of alumina to obtain aluminiumb metal, cryolite is added mainly to
A.	lower the melting point of alumina
B.	dissolve alumina in molten cryolite
C.	remove the impurities of alumina
D.	increase the electrical conductivity
Answer» B. dissolve alumina in molten cryolite

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