Mohali

Every Year, the rank varies depending on the number of students taking up the exam, number of students getting higher grades, and a lot more criteria's so prediction for the same will not be possible, but yes in NATA a score of around 90-100/200 with 80% in class 12th can easily land you in Indo Global College of Architecture merit seat.

It is very difficult because there are only 60 seats and most of them are reserved for army children.
All the best!

Yes, if you have knowledge then you are definitely eligible for a job. And after completing your degree, with your knowledge, you can get a good job.
Good luck.

There are 4 all India seats for civilians.

Yes, it is necessary for you to give an entrance either its JAM or JEST because IISER offers integrated Ph.D. programme. Here is the link:
http://www.iisermohali.ac.in/home/front-page-articles/admissions-to-int-phd-program-august-2018
IISER, Pune has the best research faculty among IISER institutes. Meanwhile, there is also an interview to judge your core interest and research ability in the respective field of Science which you want to pursue.

CSE Mohali is valid all over India. The supreme court of India expunged the all orders against CSE Mohali passed by Punjab.

Hi,
I would suggest you to look around for universities like Chandigarh University and Lovely Professional University as compare to Universal Group of Institution as they have very good professional environment and placement.