Engineering Entrance Exam

If you are general candidate, then no. Work harder, try to get at least 98.5 percentile to stand a decent chance to get into one of the NITs, IIEST or B.Plan in SPAs and MANIT.
You can try for different private and semi-private colleges. There are plenty of Architecture colleges apart from NITs and SPAs which are good in their own right.

If you are really a very good student, then go for non-regular classes and do your JEE coaching side by side. It will help you in your academic and your JEE preparation.

You should have a minimum of 60% marks in PCM.You will not get any scholarship if your score is not too good.So do well and achieve the best.

You should have at least 50% marks aggregate & also in physics, chemistry, and mathematics to be eligible for CAT examination.

Basically, you need to write entrance exam of any private college. So, do well there and get admission without GATE.

Yes, chances are there because you have scored very good percentage in JEE Mains. I hope the best and do well.

Yes,you will get B.Arch very easily. Just participate in counselling process.

Yes, chances are there to get. If not just go for more counselings and get admission in particular college for the particular subject.You can easily get MNIT as you have scored good marks which makes you eligible for it.

In general category, you might get admission in the top 3 NITs, that is Surathkal, Trichy and Warangal . You will get CE, ECE and EEE in most of the lower NITs.

I am sorry, but NIT-K cut-offs, as far as I know, reach the maximum of 5 digits. I think you should try for some other NIT or search some colleges where you could choose a branch in which you want to pursue your career.