Which of the following reaction is an example of a displacement reaction involving non-metals?
Na2SO4 + BaCl2 → 2NaCl + BaSO4
Fe + CuSO4 → FeSO4 + Cu
Cl2 + 2NaBr → 2NaCl + Br2
ZnSO4 + Fe → FeSO4 + Zn
Chlorine being a non metal displaces Bromine (a non metal) from NaBr.