Aluminium is extracted from alumina \[(A{{l}_{2}}{{O}_{3}})\] by elect – McqOptions

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1.	Aluminium is extracted from alumina \[(A{{l}_{2}}{{O}_{3}})\] by electrolysis of a molten mixture of
A.	\[A{{l}_{2}}{{O}_{3}}+HF+NaAl{{F}_{4}}\]
B.	\[A{{l}_{2}}{{O}_{3}}+Ca{{F}_{2}}+NaAl{{F}_{4}}\]
C.	\[A{{l}_{2}}{{O}_{3}}+N{{a}_{3}}Al{{F}_{6}}+Ca{{F}_{2}}\]
D.	\[A{{l}_{2}}{{O}_{3}}+KF+N{{a}_{3}}Al{{F}_{6}}\]
Answer» D. \[A{{l}_{2}}{{O}_{3}}+KF+N{{a}_{3}}Al{{F}_{6}}\]

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