Question 7
What type of reaction is 2KBr + Cl2 → 2KCl + Br2?
The right answer is the one marked above.
A single displacement reaction. Cl2 stands alone on the left and Br2 alone on the right — the chlorine has displaced the bromine.
Displacement is not confined to metals; it happens among non-metals too. Here chlorine can do it because it is more reactive than bromine.