Colleges in Orissa

Yes, you can get admission under minority sector.

No, you don't need to fill up the application again.
Once you give the exam and if you are shortlisted, then you will be informed regarding the further process.
All the Best.

Yes, KIIT is offering Ph.D in nursing.

For admission in NIT, candidate must appear for JEE Mains. Unless you appear for the entrance exam you won't get admission in National Institute of Technology. The eligibility criteria for entrance exam is 12th with PCM as the subjects.
Apart from IIT and NIT, most colleges in India offer lateral entry for diploma students. These colleges do reserve some seats for lateral entry students.Diploma holders are not allowed for JEE Main admissions but they are allowed for JEE Advanced. So they can write the JEE Main exam just to qualify for JEE Advanced.

National institute of technology Rourkela follows the online mode of application. Admission to B.Tech and Integrated courses are made on the basis of score of JEE Main. For more specific details, please share more details.

Hello!
None of the NITs accept NMAT scores for their MBA programmes. http://www.nmat.org.in/test-takers/nmat-by-gmac-accepting-institutions/ Kindly visit this link to know about the B-schools accepting NMAT scores.

It is advised from my side, you better get to their website and find contact number or email and ask them about.

Hello,
Yes, you are eligible and there is no age criteria for M.Tech. I seriously recommend you to start preparing for gate and if you score below AIR 200, then you will be having a good chance in joining the IITs.
All the best!