This study deals with the stagnation point flow of ferrofluid over a flat plate with non-linear slip boundary condition in the presence of homogeneous-heterogeneous reactions. Three kinds of ferroparticles

namely

magnetite (Fe

3

O

4

)

cobalt ferrite (CoFe

2

O

4

) and manganese zinc ferrite (Mn-ZnFe

2

O

4

) are taken into account with water and kerosene as conventional base fluids. The developed model of homogeneous-heterogeneous reactions in boundary layer flow with equal and unequal diffusivities for reactant and autocatalysis is considered. The governing partial differential equations are converted into system of non-linear ordinary differential equations by mean of similarity transformations. These ordinary differential equations are integrated numerically using shooting method. The effects of pertinent parameters on velocity and concentration profiles are presented graphically and discussed. We found that in the presence of Fe

3

O

4

-kerosene and CoFe

2

O

4

-kerosene

velocity profiles increase for large values of

α

and

β

whereas there is a decreme

nt in concentration profiles with increasing values of

K

and

K

s

. Furthermore

the comparison between non-magnetic (Al

2

O

3

) and magnetic Fe

3

O

4

nanoparticles is given in tabular form.