Q.

In the electrolytic extraction of aluminium, the solvent is 

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a

molten cryolite 

b

Fe2O3 + Al 

c

molten Al2O3 

d

 water

answer is D.

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Detailed Solution

In the extraction of aluminium by electrolytic process, alumina Al2O3 is used along with fluorspar and cryolite. Cryolite reduces the melting temperature of the mixture, and also act as solvent to help dissolveAl2O3 .

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