MBA/PGDM

Hai Tarun,
With all the information explored till now on Google, you have maximum chances of being in the first two colleges as written by you and they do have a good brand name.

What is your MAT score?

Chitkara University is a fairly well ranked institute. It is ranked 53 as per MHRD-2018 rankings. It offers healthcare management course in collaboration with Fortis.
Check the below link for more details about this college:
https://www.shiksha.com/mba/course/mba-in-healthcare-management-in-collaboration-with-fortis-healthcare-chitkara-business-school-Chandigarh-263829

You must try for MBA entrance exams. You will get into good tier-1 and tier-2 colleges only after clearing entrance exams.
Find below the list of MBA institutes:
https://www.shiksha.com/mba/colleges/mba-colleges-india

Yes, CAT is accepted almost in all colleges. Apart from this, you need to have more than 50% in graduation.

Dear!
I would suggest you to take IT as the minor, and for major you can choose Finance (preferred) or Marketing.

Hema, I am not able to find about which institute you have enquired. India has big difference in fee in I'm various institutions. For example, an MBA at a Private University like Amity Noida goes to 12 Lac plus. The amount at prime institution or universities is all the more same. Universities like Kurukshetra offer lie fees, but still not very less. There are Private Colleges like TERii Kurukshetra where an MBA can be done in less than a Lac per year. You may please check their website for fee details. www.terii.in.