Colleges in Mumbai

See depends on the cutoff marks which will be released by the St. Xavier College for new admissions. Sorry to say their cutoffs are very high every year. It crosses 95% and above sometimes but keep an eye on the college website and wait for the second and third cutoff list.
Best of luck.

Yes, you do have chances to get admission, as your scores are decent enough for the same.

Hi Payal,
You can apply for admission in Chetana's Institute of Management & Research. However, your selection will be based on your performance in the GD-PI process, your academic scores till date, participation in extra-curricular activities and work experience, if any.
You can fill the admission form at:
https://admission.onfees.com/login?instituteId=386&formPolicyId=40&formType=preReg

No, after BA you cannot get into M.Com. You can go for MA.

Yes, you can pursue B.Com after the completion of you PUC with a minimum of 50% and with no backlogs.

Most of the PG courses are of two years, so Diploma in financial Management is also of two year duration.

The topics for GD are kept generic and based on current happenings, However for the PI the difficulty will depend largely on the panel interviewing you. They're mostly cheerful but at times have grilled students a lot. Just be honest, they catch it when someone is lying. Good Luck.

All companies prefer 60% only in the placements. First, concentrate on your course. So, don't worry it doesn't matter.
All the best.