Psychology

If you are interested in psychology languages and social studies, then you can do it after passing your 12th.

Admission to all the courses in Mumbai University has started. Forms are out till 7th June and the last date for submission of pre-admission form is 10th June. In order to get admission in any college of Mumbai University, the candidate has to fill both the forms.

Dear Nikita,
Eligibility criteria for BA- Psychology in Maharaja Sayajirao University:
The candidate must have passed 10+2 or High School Senior Secondary Exam prescribed by the Central Board of Secondary Education (CBSE) or any equivalent exam conducted by any State Board to take admission in Maharaja Sayajirao University of Baroda, Gujarat admissions 2019.
The candidate must have a minimum aggregate of 45% marks.
The candidate must have English as one of the main subjects in 12th Board.

https://www.shiksha.com/humanities-social-sciences/psychology/colleges/b-a-colleges-india
You can refer to this link for B.A. Psychology colleges in India.

The decision would be based on your interest areas and long-term career plans. If you want to pursue a career in academics / technical / research areas then M.Sc would be a better option. However, if you want to move into general management / operations side then MBA would be better. Further keeping in mind your interests you can pick on psychology, chemistry or forensic sciences.

Yes, it's possible to crack MBA entrance exams. You need to join a training institute that imparts exposure to preparation for CAT. 3 to 4 months preparation is enough to get good scores in CAT.