{ H }_{ 2 }S is oxidised in presence of { H }_{ 2 }{ SO }_{ 4 } . Hydrogen sulphide gas cannot be dried using sulphuric acid as { H }_{ 2 }S gas is oxidised by sulphuric acid to Sulphur. { H }_{ 2 }S+{ H }_{ 2 }{ SO }_{ 4 }\\longrightarrow 2{ H }_{ 2 }O+{ SO }_{ 2 }+S Hence, false.