What are uses of `H_(2)SO_(4)`

What mass of H_(2)SO_(4) contains 32g oxygen ? .

What volume of 96% H_(2)SO_(4) solution (density 1.83 g/mL) is required to prepare 4 litre of 3.0 M H_(2)SO_(4) solution ?

What happens when H_(2)SO_(4) added to CaF_(2)

what happens if conc H_(2)SO_(4) is used in preparing hydrogen by its reaction with a metal?

Platinised asbestos is used as a catalyst in the manufacture of H_(2)SO_(4) .It is an example of :