An attempt has been made to investigate the effects of chemical reaction on an unsteady MHD flow past an impulsively started oscillating inclined plate with variable temperature and mass diffusion in the presence of Hall current and Heat source. The dimensionless governing equations are solved numerically using Laplace transform technique. The profiles of velocity, temperature, concentration are discussed with the help of graphs for different parameters like Grashof number, Prandtlnmber, Schmidt number, Chemical reaction parameter, Heat source parameter ,Hall current parameter, Magnetic field parameter.