Colleges in Mumbai

It's not difficult, but there are less seats as compared to other courses and also admissions are based on a combination of entrance test+merit.

Master's degree classes in any field at Xavier's are conducted in the evening. The schedule is not hectic.

Xavier's doesn't offer any such BA course, you can try for BM. It has a similar course patten.

I would suggest you go for MS Ramaiah, you may also check the link below to get a clear idea:
https://www.shiksha.com/science/course/m-sc-in-physics-m-s-ramaiah-university-of-applied-sciences-msruas-m-s-r-nagar-bangalore-234575

Hi, yes you can apply through management quota for that you should've must appeared in the CET exam and for the admission procedure you'll have to contact the college authorities

It is one of the reputed institutes and therefore, the placements would also be higher compared to the other institutes. MBA in hotel and tourism management is the trending course nowadays so you should definitely focus on the same and keep going for further success.

Xavier University will be a better option than other because of its best course curriculum, faculty, placements, and so on.

Yes, you can pursue Diploma on the basis of class 12th score, but see that you have not reached age limit. It would be better if you complete B.Sc mathematics, and then M.Sc etc. than switching in Diploma.