University of Mumbai [MU]

Yes, as per my knowledge you can change your college during the 3 year or 5 year course. If you are changing the college within the same university, then there is no problem. But, if you have to change the university, then you might face some trouble.
As per one of the common rule of Universities in India, if you are migrating from university to university between your course, then you will have go through an evaluation process. As per this process, the new university will assess your papers, which you have given in your last university.

No, you cannot chance once you have been admitted into a certain course. You have to continue with your course else discontinue the same and rejoin with your preferred course.

Hi Aruna,
The applicants must be academically strong and work experience is also preferred. Additionally, it will depend on what kind of job are you looking for. You can check the job portals and look for vacancies and requirements. You can prepare accordingly.

There will be a loss of one year if you leave the college. What is the reason of doing so? If it's personal don't leave the college because you may face the consequences in the next college.

Hi Kashika,
I would suggest you to check this with your seniors as they must have gone through this phase.
All the best.