Anhydrous $AlCl_3$ is formed in
- A$AlCl_3 \cdot 6H_2O \xrightarrow{\Delta }$
- B$Al(\text{Red hot}) + HCl(\text{moist}) \xrightarrow{\Delta }$
- C$Al_2O_3 + 3C + 3Cl_2 \xrightarrow{\Delta }$
- DAll of these
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