Maharashtra

You may refer to following links for list of BTech CSE colleges in state of MP and Maharashtra:https://www.shiksha.com/b-tech/ranking/top-computer-science-engineering-colleges-in-madhya-pradesh/46-2-113-0-0
https://www.shiksha.com/b-tech/ranking/top-computer-science-engineering-colleges-in-maharashtra/46-2-114-0-0

Hello Sunny,
With just 54 percentile in CET, it's quite difficult to get admitted into a "good" B-school in Pune and the colleges giving you admission won't be "good"; it would be a waste of both money and time to pursue MBA from such colleges. I would advise you prepare well and given these exams another shot next year. Try aiming 98+ percentile in order to stand a chance of getting a "great" B-school in Pune or Mumbai.

GD-PI round is compulsory in all MBA colleges for admission selection. You have to prepare hard for it. But it is not difficult to crack.
https://www.shiksha.com/mba/colleges/mba-in-sales-marketing-colleges-pune
Go to above link to get list of good MBA colleges (Marketing) in Pune.

Hello Talib,
All the private colleges of Pune have management quota seats so you may take admission via this, but you need to talk to the colleges very soon as the seats fills very fast.

Hello,
BVPCOE Pune is a good college to pursue engineering, it got 66 rank in NIRF 2017 ranking, placement cell is also well oiled there so you may consider this college, and as far as preparation is considered NCERT books are enough to crack it and question paper consists of only physics and maths and there is no chemistry section.

Firstly, OBC is not a caste, it's a category. Quickly coming to your answer part, yes, you can get admission in Maharashtra colleges with your JEE marks.

No, 63 marks are too low to get even in a B-grade college, either you should accept a favorably average college and focus on area of presentation skills, better performance in academia and emerge out or wait for another year and prepare well.