Dear Karthi, if you have completed your 10+2 with Physics, Chemistry, Biology/Mathematics as your core subjects with a minimum aggregate of 50%, you are eligible for studying B.Sc Food Technology. It is 50% for General Category and 45% for reserved categories. Few Institutions conduct admissions based on Entrance examination while few conduct admissions based on the merit in your highrst qualification. So it depends on the Institution that you want to take admission in.