Chemistry · 2012
NEET 2012 · Prelims · Code A · Q72
Aluminium is extracted from alumina ( Al_2 O_3) by electrolysis of a molten mixture of:
Aluminium is extracted from alumina $\displaystyle \left(\mathrm{Al}_2 \mathrm{O}_3\right)$ by electrolysis of a molten mixture of :
Official answer
(1)
$\displaystyle \mathrm{Al}_2 \mathrm{O}_3+\mathrm{Na}_3 \mathrm{AlF}_6+\mathrm{CaF}_2$
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