Business Management Studies

Hello Shivam, Just do not worry. Almost every management institute has specialisation in HR. Also to get into these institutions there are plethora of entrance tests. You will have to clear one of these at least. I am attaching a link that will give you required information about top college offering HR. https://www.shiksha.com/mba/articles/top-10-mba-hr-colleges-in-india-blogId-6938.

With your CMAT score, you need to fill forms of colleges and then you need to clear GD and PI round and then you can get admission.

Your chances of getting a call from IIMs are not that good, but if you score good marks like more than 99 percentile then you can get a call but in PI, you need to give a valid reason regarding your gap of 2 years.

It is going to be very difficult for you to get an admission in IIM Bangalore, without some good Work Ex and CAT marks, as IIMB gives graduation marks very high weightage in comparison to other colleges. And, after getting in you will actually need work extra hard to justify the lower marks in graduation that you have (but, with hardwork that is possible.)
Anyway, you can also look at IIM C and L which don't give as much emphasis to past acads.
Good luck.

Since you have not mentioned your university, it is quite difficult to say. But, in general, it sure does seem possible. A lot depends on the marks of people around you (as IIM Bangalore grades your marks relative to others and then gives your application some points). Anyway, it does seem possible, just score as high as possible in your CAT.

I will be honest that IIM Bangalore is going to be very difficult for you. But, you can target IIM C, they give very low weightage to graduation marks.

There is no such difference in the curriculum of them as the syllabus is more or less centralized as only one academic department looks after all the 4 institutes. The tests and exams conducted have most of the subjects common.

I would suggest you look at the official site of IIM Banagalore for the same. But, in general you need to give GMAT, prepare a SOP and get some recommendations. All this is then followed by an interview.

Yes, college like DU, Christ University, Symbiosis, IP University and many colleges conducts Entrance exam. BMS is offered by DU and Xaviers college Mumbai and Xavier college, Kolkata takes Entrance for BBA. These are best college for BBA and BMS.