The most excellent applications on the practice and status of research in environmental science and technology, both natural and human made, with respect to the concepts of chemical reaction are heat absorption and Newtonian heating. For this purpose, in this paper, the numerical investigation of Newtonian heating effect on unsteady magnetohydrodynamic free convective flow of radiating and chemically reacting Casson fluid past an infinite oscillating vertical porous plate embedded in a porous medium is conducted by considering the effects of heat sink and viscous dissipation. The fluid motion is persuaded due to the periodic oscillations of the plate along its length. This phenomenon is represented as non-linear partial differential equations with initial and boundary conditions. By introducing suitable non-dimensional variable and parameters, the leading equation with initial and boundary conditions are converted into dimensionless form, which are then solved numerically using a finite difference method. The effects of several relevant parameters on the velocity, temperature and concentration are displayed graphically whilst the effects of these parameters on the skin friction, Nusselt and Sherwood numbers are exhibited in tabular format and then discussed in detail.
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