Medium
Which of the following reactions forms the basis of the Goldschmidt alumino-thermite process?
- A$2Al + N_2 \to 2AlN$
- B$2Al + 3Cl_2 \to 2AlCl_3$
- C$2Al + 6HCl \to 2AlCl_3 + 3H_2$
- D$2Al + Fe_2O_3 \to Al_2O_3 + 2Fe$
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