An explosion takes place when conc. `H_2SO_4` is added to `KMnO_4`. Which of the following is formed?

An explosion takes place when conc. H_(2)SO_(4) is added to KMnO_(4) . Which of the following is formed ?

When conc. H_(2)SO_(4) is added to charcoal

Why does explosion occur if conc. H_(2)SO_(4) is added to KMnO_(4) ?

When conc. H_2SO_4 is added to dry KNO_3 brown fumes evolve. These are of