No, it is not possible to pursue two full time courses from the same University as in most the Universities it is not allowed. However, If you are too keen to pursue two courses together you can probably do one through correspondence and one through Regular but for that as well you need to check whether Mumbai University allow another degree along with its own degree programme.

Advisable would be that you should pursue a single degree, as two degrees are quite exhaustive and at times it becomes difficult even to complete one so better would be that you should opt for Single degree.

Feel free to comment if you have any doubt

Good luck