NIT

According to ranking, it's Warangal, Suratkal and Allahabad.

There are few good universities that accept JEE Mains scores like Thapar University, Punjab Engineering College, Delhi Technological University and NSIT.

Hello Gautam,
BITS-Pilani, KIIT College, VIT University, PES University, Thapar University, Sastra University, Anna University, DTU Delhi, NSIT-Delhi, PGS College, BIT-Mesra and HBTU-Kanpur are best colleges apart from IIT and NIT.

Firstly, you have to score more than 75% marks in class 12th or be in top 20 percentile of your board for being eligible for admission and then you have to score more than 150 marks to get admission into NIT, Warangal.

Based on the marks of class 12th, you are not eligible for admission in NITs.

Hello Abhishek, Kindly check the attached link, That will help you to make your preferences
http://blog.askiitians.com/top-nits-learning-mechanical-engineering-basis-jee-main-closing-rank/
Good luck.
Thank you.

Check out the JEE Mains 2018 Eligibility Criteria to clear every single doubt coming in your mind.
According to this, the candidates who have scored at least 75% marks in the 12th class are only eligible for appearing in the JEE Mains exam.
So, if you can't appear in the JEE Mains exam, then you can can't get admission in any of the NITs or IITs.
If you haven't scored 75% in 12th, then you can go for the improvement exam or the NIOS exam.
Hope this will help.
All the best.

Almost half the number of seats available in a particular NIT are reserved for the home state students. But the sad part is that those seats too are filled according to the reservation policy of the Government of India. But the cut-off ranks for the home state quota seats usually remain lower than the other state quota seats for some NIT, but not all.

Hello Aniket,
Yes there are reservations based on your caste / category. The general category is unreserved while you have reservations for BC, OBC NCL, SC, ST, etc.