The corrosion of zinc in binary acid mixture (HNO₃ + HCl) containing Hexamine has been studied at different acid concentrations, inhibitor concentration and temperatures. As the concentration of acid increases corrosion loss and I.E. (Inhibition efficiency) increases. As the concentration of inhibitor increases I.E. also increases. As temperature  increases  corrosion loss increases while percentage of I.E. decreases. The plot of log (θ/1-θ) versus log C results in a straight line suggest that the inhibitors cover both the anodic and cathodic regions through general adsorption following Longmuir isotherm. Galvenostatic polarization curves show polarization of both anodes as well as cathodes.