Hi singh

thanks for asking your query as you come under general category therefore your chances of getting nits or iiits are very less because for such colleges you should have rank between 5000 to 9000 then you could aspect something through the josaa counselling,with your rank you dont have any scope of iiit or nit.

click link for more information 

https://engineering.careers360.com/jee-main-college-predictor

Hi there,

Since your rank is greater than15000 , possibilities of getting good NIT and IIIT decreases but you have the opportunity of getting admission in  pec, hbti,jmi,dtu nsit, and many more.You can get admission there in spot and college round surel and just u have to do is register yourself ther and last advise trust nirf ranking framework and work to dig out college’s cutoff ranks.

I hope my answer was helpful.

Good Luck !!!