Hello student, 

As you haven't mentioned the stream I assume it to be engineering. As per the Recent NIRF 2018 Rankings, Here is the list of Top 20 Engineering colleges which allows lateral entry B.Tech admission for Diploma students and BSc Mathematics graduates.

1. Anna University, Tamil Nadu
2. Jadavpur University, Kolkata
3. Thapar Institute Of Engineering & Technology, Punjab
4. PSG College Of Technology, Coimbatore
5. Amity University, Uttar Pradesh
6. Manipal Institute Of Technology, Manipal
7. Delhi Technological University [DTU], Delhi
8. College of Engineering [COEP], Pune
9. Kalinga Institute Of Industrial Technology [KIIT], Bhubaneswar
10. Pondicherry College Of Engineering [PEC], Puducherry
11. Vishwakarma Institute of Technology [VIT], Pune
12. RV College of Engineering, [RVCE] Bangalore
13. Ramaiah Institute Of Technology [MSRIT], Bengaluru
14. BMS College of Engineering, [BMSCE], Bengaluru
15. Siddaganga Institute Of Technology [SIT], Tumkur
16. PES University, Bengaluru
17. Veermata Jijabai Technological Institute [VJTI], Mumbai
18. New Horizon College Of Engineering [NHCE], Bengaluru
19. Nitte Meenakshi Institute Of Technology [NITTE], Bengaluru
20. MIT World Peace University [MIT-WPU], Pune

Cheers!