B.Sc

According to your interest, you can choose best stream in B.Sc. But nowadays, B.Sc. Hons in physics is more demanding in India.

No, not all. Any Biology student can do it easily, only some difficulty is faced by B.Tech biotech students due to maths and physics.

The admission is given on the basis of only JEE Mains and JEE Advance score (rank).

B.Tech graduate with what subject?

The candidate should have passed 10+2 from a recognized board with at least 50% marks in aggregate with Science subjects for admission in B.Sc biotechnology in Banasthali Vidyapeeth.

You can further do M.Sc in Biotechnology or M.Tech in Biotechnology for good, reputed and good salaried job. I am writing some options for biotechnology students :-
Lab Technician
Research Scientist
Teacher/Professor
Research Associate
Science Writer
Biotechnologist
Sales Representative
Quality Control Offi

Now, the answer is, yes and that's obvious because it's B.Sc. After all.

You should go for MBA in Hospitality because you have already spent ample of time in same field. Colleges where you can do these courses are:Christ University - Bangalore
Lovely Professional University - Punjab
National Institute of Tourism and Hospitality Management - Hyderabad
Kerala Institute of Tou