MetallurgyEasy
Question
Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixture of :
Options
A.Al2O3 + KF + Na3AlF6
B.Al2O3 + HF + NaAlF4
C.Al2O3 + CaF2 + NaAlF4
D.Al2O3 + Na3AlF6 + CaF2
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