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