St. Xavier's College, Mumbai

I would necessarily say St Xavier's College Mumbai is much better than say DU. As here you get an all-round exposure apart from studies. And I personally believe that the kind of personality development you would get here at Xavier's is beyond any colleges of DU unless you go to Stephen's, LSR, Hindu etc.

No requirements. You only need to clear the cut-off, which ranges from 96-99% for Non-Christian General category. You can be from any subject background.

As per my knowledge, 120 seats are available for this course in this college.

Yes, you can do economics (Hons). It's a good course and there are many career opportunities after this course.

Online methods are available, I think you are late though.
Please check www.xaviers.edu for more details.

Yes, Xavier's offers B.Com but only evening classes.

You can try by BA in History. The cut-off is usually above 95% for non-christian general category.

No. Xavier's only has science for junior college.

You can try, most probably you will get in.