Mizoram

Sorry dear, no chance at this rank in any NIT.

IIIT-Bhagalpur is definitely better being mentored by IIT Guwahati and permanent campus started building. Leave the IIIT tag alone, it provides best facilities, approved by MHRD as institute of National Importance.

You may get admission in this institute. It depends on your choice of college. If you are looking for NITs or IITs, it is not possible to a get seat.

Hi Kadaru,
As you have scored 84 percentile in JEE Mains exam, so you are eligible to take admission in sikkim or Mizoram. Yes, you can get a seat with this score. Just participate in the counselling process. Best of luck.

Hi,
Please visit Shiksha. Com's college predictor
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor. Ranks keeps on changing every year and differs from one branch to another and one college to another. If you fulfill the eligibility criteria of the specific institute you may complete further admission formalities. For now, I would suggest you to first contact the institute officials of the shortlisted universities directly for specific eligibility criteria details.

Yes, you are eligible for the course.
https://www.vlccinstitute.com/course/professional-diploma-in-makeup/

Go for Osmania University if you don't want in the NE states. Osmania University is all good in terms of many aspects and comparable to NITs of NE.
First of all, every college is good. Everything depends on the students and how he/she is. Thus as per the question, my answer will be if you choose NIT, then go for Agartala or Silchar, else choose OSMANIA University.

I would Suggest to go for NIT Silchar for mechanical or even Agartala is also better option among all as per my view as NIT - Agartala and NIT- Silchar have a good placement as per last 3year track record. And thus, the question for your answer is Silchar NIT is best for Mechanical as per view.

One NIT is in Sikkim and same for Mizoram. However, these NITs are quite low ranked due to various factors. Still, it's a prestigious college.