can I get nit with 70 percentile in sc category
Hello Aspirant,
According to the percentile you have mentioned in the question your rank is expected in the range of 385534 - 264383. On the basis of such rank and category you cannot get any of the good NITs as per previous year's cut-offs but yes you can get some of the lower NITs enlisted in the link given below if and only if you deserves Home state quota for them enlisted in the link given below :-
https://engineering.careers360.com/articles/low-jee-main-rank-check-which-colleges-you-can-get
But if you do not deserves Home state quota for them then I would suggest you to sit for some state counselling because in some of the state government colleges you can get admission on such ranks.
Note that the cut-offs are bound to change every year depending upon various factors.
So you can use JEE-Main College Predictor to predict your chances of admission in different engineering colleges of India :-
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer
I hope this information helps you.
Good Luck!!