Navi Mumbai

Hello Hariom,
As per your marks, you will get lower colleges via CET. However, check here to get more details about your probable colleges.
https://www.shiksha.com/b-tech/resources/mhcet-college-predictor

Yes, of course, ITM-Navi Mumbai provides MBA in various streams such as finance, marketing, HR, operations, financial markets, international business and retail marketing management.

Hi Hardik,
SIES, Pillai and DY Patil are the top colleges in Navi Mumbai. Among these colleges, SIES is the topmost college. You can go on the respective college websites and check for further details.

The institute is affiliated to In Academic Association with Southern, New Hampshire University so it's not regulated with UGC and AICTE, to having degree from such institutes may be good by quality wise but when you apply for a govt. jobs the certificates may not be valid. If you are searching for UGC, AICTE approved university. You can find institutes in following link:
http://www.mbadistancelearnings.com/top-ten-distance-learning-mba-colleges
I hope this will be of help.

You can get, but colleges will not be top ones. You can otherwise give CAT/MAT/SNAP etc.

You can go for it. But with your score, I think you will not be able to get admission.
https://www.shiksha.com/mba/course/post-graduate-diploma-in-management-itm-business-school-navi-mumbai-itm-160351