Political Science

Hi,
Some of the good colleges in Mumbai for B.A in political Science are:
Bhavans College
chetana College
Khalsa College
Jai Hind College
KES College

Yes, you can refer https://www.shiksha.com/humanities-social-sciences/colleges/international-relations-colleges-india.

Yes, it is a full time course.

The dates have not been announced yet. But the admission process generally starts in the month of June.

No, it is upto your HS performances.

The eligibility is you must have completed B.A. (Hons.)/ B.A./B.Sc. (Hons)/B.Sc. with the required percentage including all subjects studied at B.A./B.Sc. level except for those subjects where only pass marks are required and which do not contribute to the total in the final (degree) mark sheet. The subject in which admission is sought must have been studied in all the three years at the undergraduate level.
Final year appearing candidate can also apply on provisional basis.

You must check it on the jmi.ac.in.

It will be marked as fail, and you need to reappear for those papers again.

Sorry, I am not in a position to comment on this, because this is something which is at the discretion of the university. Probably the university official will be in a better position to address the same.

Yes, for sure. You can opt for a Masters in sociology. To continue pursuing studying from DU, you are required to clear the entrance examination.