Engineering Entrance Exam

Your going to JEE Advanced which depends on your reservation quota. The cut-off marks for general is 81 marks, 49 for OBC, 32 for SC and 27 for ST. Your 12th exam marks plays no part in going to give JEE Advanced. If you're unreserved, you have to give the exam again next year. Other than that, you

Dear Purushothaman,
Please go through these links to predict rank & college.
Rank predictor : https://www.resonance.ac.in/answer-key-solutions/JEE-Main/2017/jee-main-2017-rank-predictor.php
College predictor : https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

You can get NITs but you have to apply for counselling through josaa.nic.in.
So, you can get a list of colleges in which you will be placed.
All the best.

It depends on your score and the cut off for your category.
Please tell me your score.

Dear Aditya,
Please go through these link to predict college:
Rank predictor : https://www.resonance.ac.in/answer-key-solutions/JEE-Main/2017/jee-main-2017-rank-predictor.php
College predictor : https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

You have scored above the cut-off. So, you can write JEE Advanced.
You cannot get any IIT without JEE Advanced.
You may get NITs but not the best ones as the cut-off is 49.
The application for JEE Advanced open tomorrow. So, do it well.
All the best.

VJTI College and many more just keep calm as it is easy to get an engineering seat.