Science

The basic criteria for B.Sc. Is that you must have 10+2 with Science background, with minimum 50%. .

Yes, entrance exams are necessary to take admission in M.Sc. Computer Science. The admission process varies from college to college. Some colleges conduct their own entrance exams while others accept scores from national level exams such as GATE JAM etc. I hope this helps. Let me know if you have any other questions.

Thiagarajar College in Madurai offers B.Sc. Computer Science programme. The admission process is based on the merit of the qualifying examination. I hope this helps. Let me know if you have any other questions.

Yes, you can pursue M.Sc. In Psychology after completing B.Tech in Computer Science. You can do an M.A. Or M.Sc. In Psychology without having graduation in Psychology. The eligibility criteria will vary from university to university. M.A. Psychology is offered by many top universities for graduates with 50% marks in their graduation
I hope this helps. Let me know if you have any other questions.

You can pursue a Diploma in Forensic Science which is a 1-year course. The eligibility criteria for the Diploma is passing 12th or equivalent exam with minimum 50% marks However, I could not find any information on 1 year CS Diploma after B.Sc. (h) forensic Science and PCB in 12th. I hope this helps. Let me know if you have any other questions.