NIT admission depends on the various factors like home state quota/ Other state quota, Category etc. It would be tough to tell you the exact marks. but try to score more than 200-220 in JEE Main entrance Exam. You can check the previous year cutoff rank with the given below link.

https://engineering.careers360.com/articles/nits-cutoff-for-btech-mechanical-engineering

Good Luck!

Hello Ravi,

As per the last year ranking trends, you need to score at least 200 marks to get the Mechanical Engineering seat at NIT Tiruchirappalli. 

The minimum is AIR 11000 - 170+ in JEE for NIT Trichy.

For Motilal Nehru National Institute of Technology, Allahabad the closing rank for last few years is as follows -

10894 (2017)

8240 (2016)

6870 (2015)

So make your strategy accordingly and prepare yourself well for the exam.

For more details visit -

https://engineering.careers360.com/articles/nits-cutoff-for-btech-mechanical-engineering