MBA/PGDM

Hello Vaseem
Your score is bit less, I recommend you to apply in the colleges ranked 51-100 or you can try for:-
ABV- Indian Institute of Information Technology and Management, Gwalior
National Institute of Technology, Warangal

ISB-Hyderabad and IIM-Bangalore are the best colleges. Other tier one and two colleges include IBS Hyderabad & Bangalore, Christ University, NMIMS, Welingkar, IFIM and ISBM.

Sinhgad management institute offers MBA in IT systems and average salaries offered range at 3 LPA and maximum at 7 LPA.
https://www.shiksha.com/mba/course/master-business-administration-sinhgad-institutes-pune-sinhgad-management-institutes-mba/136443

JIMS is a decent college, on the other hand you can try out colleges like KJ Somaiaya, Christ, Acharya B-school, IIBS, etc. at this score. JIMS has good placements assistance.

All colleges go through certain rounds like GD or case study followed by personal interview, so it is mandatory for admissions, rather you can join many Facebook pages related to GD/PI for preparation.

In India, lots of B-Schools are there which provide good education in the field of MBA. So, if anyone is interested in IIMs and top most B-Schools then prepare for CAT, MAT, etc.

Not really. Below I'm providing you a link by moving onto that you can check the eligibility criteria as per your interest of course field.
http://www.galgotiasuniversity.edu.in/eligibility.asp
Apart from this I suggest you to call the admission cell and inquire about the same if you still have doubts

Yes, you can. If you are a commerce graduate with an MBA then you will always get an edge over engineers if your basics are strong.