BCA

You are disqualified in EAMCET, as your marks are only 35. It doesn't meet the cut off marks. So, you won't get seat in any college. All the best for your future.

Here are a few colleges:
1) Christ University
2) Loyola College (LC, Chennai)
3) Amity University
4) St Joseph'S College - SJC
5) Presidency College
6) Dav College Chandigarh - davchd
7) The Oxford College of Science
8) Sri Ramakrishna College of Arts and Science etc. All the best.

There might be concession for SC caste, you have to ask in fees department for that.

It will cost you around 75k per year for Bachelor of Computer Application from, The Oxford College of Science for the college fees only other charges will be extra.

For this kind of problem, you need to talk with your college office staff. They will help you and if you didn't get any response for college, then directly talk with university. They will help you.

The first point is that your interest in the subject. Both have good career options. BCA has scope in the IT and Computer fields while Biotechnology has scope in the life sciences field.

Yes, B.Sc in computer science has good career scope. Its duration is 3-year after completing 12th. You can pursue MCA after completing BCS or BCA.

Dear Jainam,
HSC result has been declared in all the states of India. Therefore, colleges have started issuing the application form/ course prospectus in their offices. You can approach in a working day and receive the same or you can apply online too (if the option is available).