Question

Al is obtained by the electrolysis of fused mixture of $A{l}_2{O}_3$ and $N{a}_{2}Al{F}_6$. If true enter 1 else 0.

Answer 1

$Al$ is obtained by electrolysis of fused mixture of $A{l}_2{O}_3$ and $N{a}_{2}Al{F}_6$ and $Ca{F}_2$ as $A{l}_2{O}_3$ being a bad conductor of electricity and has a very high melting point , so before subjecting to electrolysis, it is mixed with $Ca{F}_2$ and $N{a}_{2}Al{F}_6$ which lowers its melting point thereby making it conducting. Hence, 0.