This paper studies thermal radiation effects and the impact of dissipation factor on an unsteady nanofluid flow over an elongated sheet. Nanofluid is prepared by \(Al_2O_3\) and \(TiO_2\) nanoparticles mixed with water as base fluid. By considering convective conditions, investigation of the impact of suction, nonuniform heat source or sink, and viscous dissipation was done. Governing PDEs are reformed into ODEs by applying similarity transformation and solved using the MATLAB bvp4c. It resolves ODEs by addressing general form and multipoint boundary-layer problems. Its core functions involve deriving the ODE solution, specifying relevant boundary conditions for outcomes, and providing an initial guess to guide the solver effectively and compared results graphically. In view of the present study, an enhancement in unsteady parameter affects a rise in both velocity and concentration distribution. The current results closely align with previous findings by other authors, and their accuracy is confirmed through comparisons with existing literature.