The ratio of mass of hydrogen and megnesium deopisted by the same amount of electricity from `H_(2)SO_(4)` and `MgSO_(4)` is

The ratio of weights of hydrogen and magnesium deposited by the same amount of electricity from H_(2)SO_(4) and MgSO_(4) in aqueous solution are

Gram molecular mass of H_(2)SO_(4) is

Hydrogen can be prepared by the action of dil. H_(2)SO_(4) on

Ethyl hydrogen sulphate is obtained by reaction of H_(2)SO_(4) on