Ph.D

Apart from IITs (Kanpur, Roorkee and Guwahati), NIT Warnagal, NSIT Delhi, Thapar University, Manipal Institute of Technology, Karnataka, Vellore Institute of Technology (VIT); and Sir M. Visvesvaraya Institute of Technology, you may check at the following link:
https://www.shiksha.com/top-bio-technology-colleges-in-india-rankingpage-54-2-0-0-0

SP Jain and ISB are the two colleges best known for Ph.D in management.
http://www.phdstudies.com/universities/India/

There is no difference between normal or technical Ph.D.

Hello,
If you want to pursue M.Sc after completing B.Sc then you have many options available like - you can pursue M.Sc. from IIT or IISC.
If you want to prepare for IIT JAM then you can visit the below mentioned link:
https://www.youtube.com/watch?v=4SBAhhto08M
For that you have to write IIT JAM test. After qualifying JAM, you will be eligible for:
1. M.Sc
2. Joint M.Sc and Ph.D.
3. M.Sc and Ph.D dual degree.
4. M.Sc or M.Tech.
5. Integrated Ph.D courses at IISC.
I hope it helps.

You can consider a specialized Masters such as MS management or in a related area of your choice, MBA (Pharma), M.Pharma, MBA, hospital administration etc. Every program is having different requirements so check individually.
Good luck.