This paper concerns with the study of unsteady MHD mass transfer flow past a uniformly accelerated vertical plate with heat sink in a rotating system in the presence of chemical reaction of the first order. The entire system is assumed to rotate with a constant angular velocity about the normal to the plate, and a uniform magnetic field is imposed transversely to the plate. The equations governing the flow are solved analytically by applying Laplace transform technique in closed form. The expressions for primary and secondary velocity fields, temperature field and concentration field are obtained in non-dimensional form. The influence of the physical parameters like Grashof number Gr, thermal Grashof number Gc, Schmidt number Sc, Prandtl number Pr, magnetic field parameter M and heat sink parameter Q on these fields is discussed graphically.

chemical reaction, magnetic field, rotating system, electrically conducting.