Dear Gaurav, if you are enquiring about Biotechnology Engineering, you should have completed 10+2 with Mathematics, Biology, Physics and Chemistry as your subjects with a minimum aggreggate of 50%. For admission into this course, there are few Entrance Examinations like JEE Main, TS EAMCET, AP EAMCET, KCET, VITEEE, BITSAT, DTU EEE and IIT JEE.