The attention is paid to study the magnetohydrodynamics free convective heat transfer for an incompressible, laminar and electrically conducting viscoelastic fluid on a vertical plate with uniform wall temperature and concentration of nanoparticle volume fraction in a micropolar fluid in the presence of a first order chemical reaction and thermal radiation. For a better understanding of variation in heat transfer a uniform magnetic field is applied normal to the plate. The governing partial differential equations of flow, heat and mass transfer of micropolar fluid incorporation of nanoparticles are modeled through Navier-Stokes momentum, energy and concentration equations. The governed equations are transformed to a set of ordinary differential equations and they solved numerically by Keller Box method. The numerical results are found to be good argument and the results are shown graphically for various values of magnetic field parameter M, coupled number N, radiation parameter R, chemical reaction parameter δ, Prandtl number Pr, Schmidt number Sc, Brownian motion Nb and thermophoresis parameter Nt.

micropolar fluid, free convection, chemical reaction, thermal radiation, nanofluid, coupled number.