A) \[C{{r}_{2}}{{O}_{3}}+A{{l}_{2}}{{O}_{3}}\]
B) \[F{{e}_{2}}{{O}_{3}}+Al\]
C) \[F{{e}_{2}}{{O}_{3}}+A{{l}_{2}}{{O}_{3}}\]
D) \[A{{l}_{2}}{{O}_{3}}+2Cr\]
Correct Answer: B
Solution :
Thermite is a mixture of \[F{{e}_{2}}{{O}_{3}}+Al\]. It is used for welding.
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