Question:
$\mathrm{Fe}_{2} \mathrm{O}_{3}+2 \mathrm{Al} \rightarrow \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{Fe}$ The above reaction is an example of a
(1) Combination reaction.
(2) Double displacement reaction.
(3) Decomposition reaction.
(4) Displacement reaction.
Solution:
The given reaction is an example of a displacement reaction.