It totally depends on the mark you score in JEE Mains. 

Respected Sir, 

I would kindly request you to provide me more information like what mark are you expecting in your mains. For getting into NIT Suratkal , you would need a rank below 18000. To know more about the cut off, kindly visit the below attested link that would provide you the previous  year stats . 

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-surathkal

Hope I was able to help you. 

Thank you .