2 KMnO4 (aq) + H2SO4 (aq) → K2SO4 (aq) + 2 MnO2 (s) + O3 (g) + H2O (l)
This is an oxidation-reduction (redox) reaction:
2 MnVII + 6 e- → 2 MnIV (reduction)
3 O-II - 6 e- → 3 O0 (oxidation)
This is a precipitation reaction: MnO2 is the formed precipitate.
This is a gas evolution reaction, O3 is the formed gas.