Question

Aluminium is extracted from alumina ${\rm{(A}}{{\rm{l}}_2}{{\rm{O}}_3})$ by electrolysis of a molten mixture of:

Accepted Answer

${\rm{A}}{{\rm{l}}_2}{{\rm{O}}_3} + {\rm{N}}{{\rm{a}}_3}{\rm{Al}}{{\rm{F}}_6} + {\rm{Ca}}{{\rm{F}}_2}$

Answer

${\rm{A}}{{\rm{l}}_2}{{\rm{O}}_3} + {\rm{KF}} + {\rm{N}}{{\rm{a}}_3}{\rm{Al}}{{\rm{F}}_6}$

Answer

${\rm{A}}{{\rm{l}}_2}{{\rm{O}}_3} + {\rm{HF}} + {\rm{NaAl}}{{\rm{F}}_4}$

Answer

${\rm{A}}{{\rm{l}}_2}{{\rm{O}}_3} + {\rm{Ca}}{{\rm{F}}_2} + {\rm{NaAl}}{{\rm{F}}_4}$

JEE CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

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