MBA/PGDM

First of all let's address your issue. If you need 12 LPA then take a drop and again appear for CAT, XAT and other exams and see if you can improve upon your percentile. The explanation of the above sentence is that lots of decent colleges don't accept MAT scores so you will eventually struggle to get a good college. If your preference is to do MBA then you can go for it given what you get, but it's hard to get 12 LPA at this percentile leave apart the fact that MAT exam will land you to good colleges. For further information about colleges refer to this link-
https://www.shiksha.com/mba/colleges/mba-colleges-accepting-mat-india

You can pursue it from Delhi University as it is considered the best for the same.

You don't have to appear for MAH CET. On the basis of your CMAT score, you can get admission in these colleges. Check out the details in the link
https://www.shiksha.com/mba/colleges/mba-colleges-accepting-cmat-Maharashtra.

https://www.shiksha.com/mba/colleges/mba-in-it-systems-colleges-india
Check here.

No, it won't be a problem. You just need to justify your gap, even preparation for higher studies is considered.

https://www.shiksha.com/mba/colleges/mba-colleges-Bangalore
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/mba/colleges/mba-colleges-Pune&ved=2ahUKEwiv7-nz_pL3AhXm7XMBHSa0DsoQFnoECDYQAQ&usg=AOvVaw2Icr21d5sD3UL_6VMMvjxi
You can check here.

Get the information here: https://www.shiksha.com/college/doon-business-school-Dehradun-26485

Hi Naseer. Go through this link to know about all the details.
https://www.shiksha.com/hospitality-travel/travel-tourism/colleges/colleges-india

Refer the following:
https://www.shiksha.com/shikshaHelp/ShikshaHelp/contactUs