A) Electrolysing fused \[A{{l}_{2}}{{O}_{3}}\]and cryolite.
B) By heating\[A{{l}_{2}}{{O}_{3}}\]with carbon.
C) By heating\[A{{l}_{2}}{{O}_{3}}\]in Muffle furnace.
D) By a process called pyrometallurgy.
Correct Answer: A
Solution :
Al is obtained by the electrolysis of \[\text{A}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}\]mixed with Cryolite \[(N{{a}_{3}}Al{{F}_{6}}).\] Hence, the correct option is [a].
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