1st aptti- normal question from maths(speed required )
2nd- group discussion(social issue like women inpowerment , compare chinees and indian software intustries)
3rd technical - according to their job profile. For fresher they ask from related technology like for .NET hey may allow java(in the case you don't know .NET)
4th - hr(No communication barrier , friendly environment during hr , they encourage you to speak )99% they select