The aim of this paper is to investigate the flow, heat and mass transfer through a truncated cone in a non-Darcy porous medium in the presence of a transverse magnetic field by considering chemical reaction and radiation effects where the fluid is micropolar. The nonlinear equations governing the flow are solved using the paired quasilinearization method (PQLM). The study reveals that increasing radiation parameter, mixed convection parameter and Forchheimer number decreases microrotation. It is also noted that an increase in the radiation parameter leads to a corresponding increase in both the velocity and temperature of the fluid.