JEE

If you belong to some category other than general, you can get admission in lower NITs. To know, use the college predictor tool:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Yes, there are some chances to get admission in VNIT, so you can apply for admission.
Good luck.

No, 75% marks are compulsory to take admission in NIT and no composition is considered now.

I would suggest you go for B.Sc or any other Bachelor's degree course instead of any engineering degree course.

Yes, JEE Mains result is important for every engineering branch except if you are going for private colleges.

Yes, you can get a college, but not a good college and you can get private colleges by paying some extra fee.

There is a very good chance for you to get NIT-H.
You can refer the link to know more: https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Good luck.

Hi Abhinit,
As you know, Sir J J College of Architecture is one of the best architecture college in India, so seats of this college are occupied by the top rankers. Although your score in JEE mains paper 2 is good, but getting a seat with this score is difficult. For your satisfaction, you can participate in the counselling process upto last round or spot round.
If not getting any seat in this college, then go for good private colleges like amity University or lovely professional university for bachelor of architecture courses.
Best of luck.

Yes, you are eligible to get admission in this college. To know in which other better colleges you are eligible to apply use college predictor tool: https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Yes, the criteria for getting admission in Bricks College is 40% marks in NATA test. As you are having good marks in NATA you can easily get Bricks College.