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The funciton of adding cryolite in the e...

The funciton of adding cryolite in the electrolytic reduction of alumina by Hall-Heroult process is to :

A

dissolve alumina

B

lower the melting point of alumina

C

lower the fuel bill

D

increase the elctrical conductivity of alumina

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The correct Answer is:
A, B, C, D
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  12. Pick up the correct statement(s) :

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  14. Which of the following process makes the ore porous ?

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