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The aim of current Paper is to examine the effect/result of ‘heat source’ parameter over a wedge through porous-medium for electrically-conducting fluid flow for a magneto hydrodynamic Casson nanofluid with activation energy. The influence/impact of ‘second law’ analysis for electrically conducting fluid(s) with chemical-reaction also investigated. Dimension-less ordinary differential equations(ODE) are obtained/derived from the highly non- linear PDEs by using similarity transformations. The ‘Runge- Kutta –Fehlberg with shooting technique’ is utilized to solve remodelled ODEs numerically. The effect(s) of the ‘physical parameter’ on velocity, temperature and concentration are extensively discussed through several plots. Numerical result(s) for Nusselt number, skin friction coefficient & ‘Sherwood number’ for various parameter(s) are computed.

An incompressible viscous MHD hydro nanofluid flow of a upright plate with effect of radiative and viscous dissipation is investigated numerically. The energy equation of radiation heat flux is defined by the Rosseland diffusion approximation. Using with suitable similarity transformations the non-linear PDE's are transformed into a set of ordinary differential equations .The converted ODE's are thensolved numerically by Keller Box method which is Finite difference method. The effects of various physical constants are analyzed and discussed in graphical and tabular values. The effects of some physical parameters suchas Lewis number, Prandtl number, buoyancy ratio, Thermophoresis, Brownian motion, radiation parameter, Viscous Dissipation and magnetic parameter are examined on the velocity, temperature and concentration nanofluid volume fraction profiles as well as on the reduced Nusselt number and the localSherwood number.