MCA

Hello,
Maximum rank to get Admission in MIT for MCA is 1st to 45AIR for general category for OBC is around 100-130 AIR.

Different universities have different criteria. Thus, some universities allow pursuing MCA after BBA if the student had studied Mathematics or Statistics or Business Maths or Business Statistics as one of the subjects in graduation or 10+2 level. So, I can recommend you some of the universities like Lovely Professional University, Christ University, JNU and University of Delhi which may allow you to pursue MCA if one of the given criteria is satisfied.

Hello,
Both of them have their advantages and challenges. Choose the one which genuinely interests you. From a neutral point of view, MBA is better than MCA.

Hello,Choose MBA if you want to make a career in the business domain. Choose MCA, if you want to make a career in the technical/technological domain. Choose the one which you genuinely feel more interesting and aligned with your career goals.

Hello,
MITS-Gwalior and SIRT Bhopal provides direct admission in MCA with good placement
There are many colleges who provide MCA course check this link: - https://www.shiksha.com/it-software/colleges/mca-colleges-madhya-pradesh

There are around 60 to 120 seats available in each affiliated college.

Yes, There are chances for you to get admission in Chennai Campus, but not sure whether you can make it in Vellore Campus.