In this paper, we discuss similarity reductions for problems of magnetic field effects on free
convection flow of a nanofluid past a semi-infinite vertical flat plate. The application of a
one-parameter group reduces the number of independent variables by 1, and consequently
the governing partial differential equation with the auxiliary conditions to an ordinary
differential equation with the appropriate corresponding conditions. The differential
equations obtained are solved numerically and the effects of the parameters governing the
problem are discussed. Different kinds of nanoparticles were tested.