Current investigation manages an analytical research on motion of micropolar fluid due to stretching sheet. Porosity is considered over a stretching sheet. Heat and mass transfer analysis is done under the effects of Joule heating, thermal radiation (nonlinear), viscous dissipation and activation energy for chemical reaction. Partial differential expressions are converted to ordinary ones by using similarity variables. Velocity, temperature and concentration profiles are examined against different physical variables like radiation parameter, Prandtl number, Eckert number, activation energy parameter, etc. Rate of irreversibility in the present flow system is also examined. Outcomes of different physical parameters are analyzed through graphs. Analysis of Sherwood number, drag force of surface and heat transfer rate is done through tables.