For 48 marks , your rank is going to be around 35,500-43,500. There are 120 colleges participating in Comedk and every year the cut off varies. Also since I don't know what exact rank you would be getting so it is difficult to tell which colleges you might get.

For BIT Bangalore the minimum cut off goes for SC which is around 24,223.  In different years the cut off has varied alot as for people from Hyderabad and Karnataka region in 2017 cut off went for 24,949 and in 2018 it went till 40,300. So you might have a chance of getting in BIT Bangalore, but chances are low so should try for other colleges.