A study on Unsteady MHD flow of for second grade fluid with the effect of heat and mass transfer has been carried out in the presence of thermal radiation. The dimensionless governing equations are solved using Laplace transform technique. The solution for velocity, temperature and concentration field are obtained and analysed for the different values of flow parameters such as thermal Grashof number, mass Grashof number, Prandtl number, thermal radiation parameter, Schmidt number and time. The results obtained depicts that velocity profile increases with increasing parameter such as Pr, R and Gr and decrease with the increase of Gc, M and t. The temperature flow characteristics decreases with increasing number of Pr and t, and increases with increasing number of R. The concentration profile decreases with increasing value of Sc and t.