hello nayak

based on your rank and considering last year trends you will not any seat in nit or iiit

but you can look for 5 yr msc course in nit rourkela in life science,chemistry which is within your range and you can get this till the spot round.

you may look for new iiits like iiit kalyani,iiit sonepat

you may look for government funded institutes through josaa and also your state government colleges accepting jee mains score

https://engineering.careers360.com/articles/list-of-government-funded-technical-institutes-gftis

all the best