Exam

Yes, you can appear.
Subjects/subject combination:
It is mandatory for candidates to have taken 5 subjects in 12th or qualifying exam.
Number of attempts:
A JEE Mains candidate can avail 3 attempts for the national level undergraduate engineering entrance exam. To qualify JEE Mains you should satisfy a

Hi Chinmay, IIT Roorkee is among the best IITs in infrastructure and its management is also very responsive to the future needs of the college. It also has a very rich academic history. According to me, the course curriculum for B.Arch here was very different compared to other Architecture colleges.

Yes, but computer engineering is a little bit difficult to get. You can try for other branches also.
Rest, it depends upon the cut-off of branches in Thapar.

You will have 14 main subjects, they will given in IES syllabus.

Your score in graduation should be 50-55% and your selection will be based on your rank.

You only get 3 attempts.

Yes, you can appear for engineering services exam in the 4th year of B.Tech.
Good luck.

If you want a good college then you have to qualify JEE Mains but if you didn't take that exam then you can go to the colleges which offer admission without JEE scorecard.

No dear,
With this rank, you won't be able to get NITs. Try for other private institutions.