NIT

Hello Jeevesh, As you haven't mentioned your rank, it is difficult for me to give you a clear answer. But You may use the college predictor tool from the link below to know the NITs, IIITs and other colleges that you can get with your JEE Main ranks :
https://shiksha.com/b-tech/resources/jee-mains-college-predictor.

Hello,
The JEE Advanced counselling procedure will start just after the result. JEE Advanced counselling will start in the month of June 2019 and the result of JEE Advanced exam is expected to be declared on 14th June 2019. So, those who have appeared in the exam should be updated with the latest notifications and dates.

Hello Siddarth, Yes you can do. There are 3 attempts for JEE Mains and 2 for JEE Advanced and the board exam scores are valid till then. Hence you can appear for the exam and get admission if you crack it with a good score. All the best !

What is your score?

NIT, Trichy is better than SPA, and even highly difficult to get admission in, you must have more than 99.6% in order to get admission in NIT.

No, there are only 559 seats in all 9 NITs offering B.Arch. You should have AIR less than 1500 to get admission in any of the NITs.

You can try for eastern NITs, NIT Srinagar or in NIT Kurukshetra.

You can try for eastern NITs or in NIT Srinagar.

Yes, if you belong to Andhra Pradesh and want to take admission in NIT, there are quite less chances for you to get a seat in any of the remaining branches in last rounds.

It is not necessary, you can apply for IIIT as well as GFTI colleges also.