Dear Khushboo, you haven't mentioned the College/Institute that you are enquiring about. Few Colleges conduct admissions based on Entrance Examination specific to their college while few Institutions conduct admissions based on the merit scored in the highest required qualification. For being eligible for B.Sc Psychology, you should have passed your 10+2 with a minimum aggrregate of 50%. This aggregate may vary from college to college. If you have any specific Institution in mind, do let us know and we will help you with those details.