Laminar unsteady free convection boundary layer flow past a vertical cone embedded in a non-Darcian isotropic porous regime with transverse magnetic field applied normal to the surface is considered. Non-dimensional solutions for boundary layer equations are found to exist when the surface temperature follows the power law variations with the distance measured from the leading edge. Numerical solutions are obtained in terms of skin friction, heat and mass transfer, velocity and temperature. Concentration, velocity and temperature profiles for various parameters are displayed in both tabular and graphical forms. Solutions are compared with the published results and are found to be in very good agreement.

free convection, micropolar fluid, magnetohydrodynamic, porous media.