as u know that cut off for ur category is 70 so u r not qualified jjeee main
and admission in nit is based on rank in jee main 
but dont loose hope u can try for bitsat , upes , jaypee noida
in my opinion jaypee noida may offer u schloarship on d basis of board percentage
 
approve if useful
						

							
Chances are less but your board marks are very good., try anyways.
						

							
Don’t loose hope.Try till last councilling happens.But when you compaire with staticstics then there are little chances.So try other top Universities,Because they provide you greate oppurtunities in placements,providies top infrastructure,enhance your communication skills.
Those Universities are
1.BITS, Pilani
2.Thapar Inst. of Engineering & Technology, Patiala
3.Lovely Professional University(Punjab).
4.SSN College of Engineering, Chennai
5.RV College of Engineering, Bangalore
						

							
your normalised score will be good ,but this tym they say that only qualified people can attend counselling,jus wait for the results and see if you can attend jee main counselling or not
 
						

							
chances are very less but hope for the best
if you didn’t you can have seat in other institutes like
lpu(lovely professional university)
srm uni,chennai