B.Tech

Thapar for CSE is better than bajaj.

For B.Tech the most demanding branch is CSE which has many specializations such as Artificial Intelligence, Machine Learning, Cloud Computing, Cyber Security, Data Science, etc. Booming in the industry in resent scenario. But choice depends on interest as Civil engineering automobile engineering aerospace engineering etc. To have good scope in market.

You can go ahead with some good college which will help you in getting huge and quality amount of knowledge in you UG that B.Tech. Colleges
Manipal University
LNMIT college
MBM University
These are some good colleges.

Yes, you can do it.

Some of the colleges are:
IIT Bombay - Indian Institute of Technology.
VJTI Mumbai - Veermata Jijabai Technological Institute.
ICT Mumbai - Institute of Chemical Technology.
KJ Somaiya College of Engineering, Mumbai.

Many of the colleges in India as well as abroad are now offering B.Tech Lateral Entry programme.

With this percentile, The chances are less to get a seat in NITs, IITs, GFTIs. You can go for the state level counselling. You can also use JEE Main college Predictor tool to know your admission possibilities in state level counselling.

If you got 70.72 percentile in JEE Main then your rank after JEE Main April will be around 5 lakhs with this rank you can't get NIT's, but you can get admission in Reputed private colleges like
SRM Institute of Science and Technology, Chennai
Lovely professional University, Phagwara
Dr Vishwanath Karad MIT World Peace University, Pune
Amity School of Engineering, Coimbatore
Heritage Institute of technology, Kolkata
Chandigarh University, Chandigarh
Manipal University, Jaipur
Nirma University, Ahmedabad.

All those candidates who got the seat allotted first time in any round, Seat Acceptance fee will have to be paid online before online document verification.

U have lot of options in doing business related to food. U can be the best entrepreneur or start working in some big reputated restaurants or hotels to analyse all the methods and struggles. Then after some years u can start your business.