A) a mixture of\[A{{l}_{2}}{{O}_{3}}\]and carbon in dry \[C{{l}_{2}}\]gas
B) \[A{{l}_{2}}{{O}_{3}}\]with \[C{{l}_{2}}\] gas
C) \[A{{l}_{2}}{{O}_{3}}\] and HCl gas
D) \[A{{l}_{2}}{{O}_{3}}\] with NaCl in solid state
Correct Answer: A
Solution :
\[A{{l}_{2}}{{O}_{3}}+3C+3{{C}_{2}}\xrightarrow{1000{{\,}^{o}}C}\underset{vapours}{\mathop{2AlC{{l}_{3}}+3CO}}\,\]
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