The balanced chemical reaction of zinc with sulphuric acid and NaOH areZn+H2​SO4​Zn+2NaOH+2H2​O​⟶ZnSO4​+H2​(g)↑⟶Na2​[Zn(OH)4​]+H2​( g)↑​Since, one mole of H2​( g) is produced per mole of zinc with both sulphuric acid and NaOH respectively, hydrogen gas is produced in the molar ratio of 1:1 in the above reactions.