M.A

Dear Tarun,
If you can afford to pursue it from some other university then it is advisable to pursue it from English and Foreign languages University (EFLU), Hyderabad. The admissions for distance mode are going on. For further details, kindly visit the below-mentioned link:
http://googleweblight.com/i?u=http://www.efluniversity.ac.in/&grqid=8cNiXU8x&hl=en-IN
I hope this would suffice. All the best and god bless you.

You don't have to pursue BA again as you have completed MA. You can pursue B.Ed and then clear, N-TET, NET, etc.

Yes, every PG courses requires a minimum percentage from UG course. Irrespective of which course you wish to choose.

Please confirm in subject you want to do MA in DU for an clear and appropriate answer.

Yes, you can apply, but in some universities, you have to clear an entrance exam.

Yes, anyone can apply for MBA. The only requirement is they need a degree from any discipline. You can appear for TISSNET exam and join in HR and LR. But the competition is very high for this course in TISS.

Your question is not clear, please specify what details of the UGC guidelines do you require?

Candidates not having Major/Honours courses, must have the concerned degree with a minimum 50% aggregate marks or 5.5 CPI in a 10-point scale for General/OBC category candidates and a minimum 45% aggregate marks or 5.0 CPI in a 10-point scale for SC/ST/PD category candidates.