CBSE 12th

After 12th, you can opt for BCA for getting job in software.

https://www.shiksha.com/humanities-social-sciences/ranking/top-arts-colleges-in-Pune/95-2-0-174-0
Here are some top colleges of Pune.

Fistfull to do MBA:
You have to be eligible for that and to be eligible for MBA you need to do your under graduation so you can choose BCA or BBA to complete your MBA BCA has good scope but for that you need a good college check out some good colleges for yourself and pursue your BCA or BBA to study MBA because you don't have very good marks. Still, you have a chance to get a good college if you can clear the entrance.
Good luck.
Thank you.

There are chances that you might get admission.
Please check http://www.du.ac.in/du/index.php?page=cut-off-2017 for last year's cut-off of SRCC and Hindu.

SRCC has only under-graduation level courses like B.Com (Hons) and B.A. (Eco) hons. And for Masters, it has, Global Business Operations. They don't provide +2 education.

Yes, you get admission. All the best.

Most probably college will take undergraduate entrance test and according to the merit they will start the admission.
All the best.

It's difficult but if you score really well in CAT and perform well in interview you can crack it.

https://www.shiksha.com/university/university-of-Delhi-24642/admission
Please go to link that I am sharing here to know about the college you can get:
Good luck.