NIT

You need to opt for JEE Mains examination.

No, if you have not locked your 1st round seat then you can't get the college which is offered in the first round of counseling.

Hello Amar,
The following are the top NITs for automobile engineering:
1)NIT Tiruchirappalli
2)NIT Warangal
3)NIT Karnataka, Surathkal
4)Malaviya National Institute of Technology Jaipur
5)Visvesvaraya National Institute of Technology, Nagpur
6)NIT Calicut
7)Motilal Nehru National Institute of Technology Allahabad
8)Maulana Azad National Institute of Technology Bhopal
9)NIT Delhi
10)NIT Hamirpur

Hi,
The chances are very low as there are few seats in NIT for B.Arch and not every NIT offers B.Arch.
But as you are from OBC category, you can hope for the best.

Hi,
For an SC category student, a rank under 250000 will be enough to get the lowest preferred branch in DTU.
And, for NIT-Bhopal, the rank should be in top 80000.

The Graduate Aptitude Test in Engineering (GATE) is an all-India examination that primarily tests the comprehensive understanding of various undergraduate subjects in engineering and science. Students who join M.Tech at IITs, NITs and IISc based on GATE score are eligible for Government of India fellowship.

Examination Questions paper of each engineering Institute or university vary because of difference in syllabus, style of teaching and student profile.

Hello Rittik,
There are cut-off marks in JEE Mains for each category and if they score equal to or above those cut-off marks then they will be qualified. For admission into NITs, the ranks come into play for each NIT there are specific closing and opening ranks and these ranks differ in each round of counselling. Usually, 7 rounds of counselling are held in which the ranks are declared for other state and home state quota. So based on that, the admissions are determined.
For the official opening and closing ranks refer:
http://josaa.nic.in/Result/result/OpeningClosingRank.aspx

Hello Vignesh,
The top colleges for mechanical engineering in Tamil Nadu are:
1) Vit University
2) Srm University
3) PSG College Of Technology, Coimbatore
4) Ssn College Of Engineering
5) Anna University
6) Thiagarajar College Of Engineering, Madurai
7) Coimbatore Institute Of Technology
8) Sastra University, Thanjavur
9) B.s Abdur Rahman Crescent University, Vandalur
10) Vel Tech University