Dual

https://www.google.com/amp/s/www.shiksha.com/university/amp/msu-the-maharaja-sayajirao-university-of-baroda-vadodara-37071 You can find the reviews and details here.

Your son has got very good score. Your son stands a high chance in getting IIIT-Bangalore. Though, you should be aware that IIIT-Bangalore offer integrated M.Tech and not purely B.Tech which is B.Tech + M.Tech. You should also try for IIIT-Hyderabad which is top notch. Seeing the percentile, I hope your son should apply for the same also.
All the best.

Yes, BGU provides Dual specialization having equal credits, and the cut off for mat is 70 percentile and you have to go through a GD/PI session.

Hi Masum
There are many colleges and universities which provide integrated Bachelor+ Masters courses such as Delhi University, Panjab University etc. Integrated course can be any field such as biotechnology, Biochemistry, microbiology, pharmacy etc. It depends on your interest in which field you want to go. Integrated courses are usually 4-5 years in duration. It is beneficial for those who are formative that they want to pursue in the same field as Bachelor. Good luck.

Can you please elaborate your question. In which college/institute you wish to apply?

In 2013, an expert committee of the UGC had recommended that students enrolled in a regular degree course should be allowed to pursue an additional degree, simultaneously under open or distance education mode from the same or different university.

Actually, Sastra University is a good choice for all departments. In Integrated medical nanotechnology, it had excellent labs, infrastructure, funded by central government. The course started back 3 to 4 years, so yet placements in that course need to know still.

Reva University
The Oxford College of Science
Christ University
AIMS Institutes
ASB - Amrita School Of Engineering Bengaluru
To see the course related details, please click the link- https://www.shiksha.com/science/colleges/m-sc-colleges-bangalore.

You should pass your HSC or equivalent with Mathematics, Physics and Chemistry, with an aggregate of minimum 80%.