Chemistry Spl

Above 50 to 60% is the cutoff.

You have good marks in Biology than mathematics so don't go with mathematics based courses. Try to get admission in Biology based courses.
1-MBBS
Prepare for NEET though it's a very tough examination. And also number of aspirants are also very high.
2-BDS
You can also get admission in this course through NEET.
3-BUMS (Bachelors of Unani medicines and Surgery)
Admission into this also happens through NEET.
4-BHMS (Bachelors of homeopathy medicines and surgery)
Admission through NEET. Some more courses-
B.Sc Zoology
B.Sc (Botany)
B.Sc (Geology)
B.Sc (Geography)
B.Sc Chemistry
B.Sc (Industrial Chemistry
B.A ( almost all courses).

There are lots of options with PCMB. Nowadays these courses are trending because of their scope and job opportunities.
B.Sc. (IT)
B.Sc CS
B.Sc (Mathematics)
B.Sc Statistics
BCA
B.A (Foreign Language).

Follow these tips to score 90%:
Cover your syllabus as soon as possible before 1 month of Examination. Don't focus on any other examination other than board examination during the time of board examination. Try to solve previous year paper of atleast 10 years. Those questions which are repeating in previous year papers prepare it more. Most of the question repeat in examination. Try to get good sleep on the day of examination. Avoid late night study. Try to solve easy questions first.

You can pursue many courses other than MBBS like:
B.Sc Zoology
B.Sc (Botany)
B.Sc (Geology)
B.Sc (Geography)
B.Sc Chemistry
B.Sc (Industrial Chemistry
B.A ( almost all courses)
B.A (foreign Language).

Class 12th PCB students can also apply for
B.Sc Zoology
B.Sc (Botany)
B.Sc Chemistry
B.Sc (Industrial Chemistry
B.Sc (Geology)
B.Sc ( Nursing)
B.Sc (paramedical)
B.Sc (Geography)
B.A (almost all courses)
B.A ( Foreign language). .

You can apply for All courses of B.A and some courses of B.Sc (Zoology)
B.Sc (Botany)
B.Sc (Geology)
B.Sc (Geography)
B.Sc (Chemistry)

To get admission in Loyola College for Bsc In Chemistry
Here below is the criteria:
Candidate must have passed 10+2 or equivalent examination with Physics, Mathmatics, Chemistry and any other subjects from a recognized school/board

Yes, you can definitely do an M.Sc. In Food Technology once you have done your bachelor's in biotechnology. Since the minimum eligibility for doing an M.Sc. In Food Technology is a bachelor's degree in any of the following branches: Microbiology, Biotechnology, Biochemistry, Botany, etc.