IIT

Yes, you can expect a seat in any of the NITs. Warangal and Raipur are having more chances.

Hello Hermione, Always remember"Failure is never final". You can always get better by hard work. It's nice to see your aim of getting into IIST at Trivendrum. Eligibility for this is JEE Advanced and for that one needs 75% marks in 12th. However there are plenty of other good colleges with this branch. I am attaching a link that will give you all the required information about these colleges. Remove IIT's and have a look at other options. https://www.shiksha.com/b-tech/ranking/top-aeronautical-engineering-colleges-in-india/49-2-0-0-0.

I think there are no good choices available at this rank, still, you can go through previous year cutoffs and seat allotment details at JoSAA website, where you will get the solution.
All the best.

Yes, huge difference is there. IIT is the best then NIT, BHU and then Central University and Amity.

On the basis of your JEE 2 RANK. you can apply for the counselling of NITs, IIITs and GFTIs on:
josaa.nic.in
From 15 june 2018.
You can also check the previous year's cutoff's for NITs,IIITs,GFTIs on the basis of your JEE MAIN AIR,
ON
jossa.nic.in
there you would get an idea of your selection.
BEST IF LUCK!

It is difficult to get the CSE in IIT because IIT, the OBC students also want a rank under 500 so for IIT institute, you have to choose the another branch in IIT or search the criteria which may be changed. All the best.

If after revaluation, your 12th Marks gets increased from 70% to 75%, then you will be getting IITs and IIST. Or you have to go for state-level Government Colleges or private Colleges in India.

Hello Mateen, As a rule of thumb, the student standing at the 2X rank where X is the total intake, is expected to get admission. This year total seats are approximately 1.2K, so a student with 2.4K rank can expect to get admission.

Hello Priyanshi, Government has proposed to introduce supernumerary vacancies for girl students, if in normal course their number is not up to a level. However, even for this girl students have to pass JEE Advanced. Then only their names will be considered for supernumerary quota.

Top BCA Exams in India are mentioned at the link provided below:
https://www.shiksha.com/it-software/articles/top-bca-exams-in-india-blogId-13696.