Hello,

During admission, it is based in your 12th percentage. In Universities, there will be screening test and interviews for admission. It depends which college you choose for admission.

BSc is done on a particular subject and it is solely about that subject only which you will study deeply in each semester with other subjects as per the syllabus.

If you have done your 12th then you can apply in the government colleges or private institutes. You will get selected as per your qualification.

Hope it helps!