I get 70 marks in jee main what is my sc rank and can I get nit durgapur mechanical stream

Hii

The Rank list and cutoffs for admissions to NITs both are yet to be released and will be declared only after the april session exam . So as such it is not possible to say what your category rank will be and will you get into NIT .
But as per the previous year trends and information collected from the various coaching institutes , Careers360 has prepared a Rank Predictor tool to help candidates get an idea of where they stand .
After using the predictor as per the information provided by you , i can say that your estimated rank will be as follows -
probable General rank will be 323,727 - 363,727 and probable category rank range will be 21520 – 23120 .
Please be informed this is just a prediction and not any confirmed result , you need to wait till april for the final rank list to be announced . The final result would vary as the number of students would increase in the april session . Also your percentile score might change if you appear in both the sessions .

You can yourself use the Rank predictor for your satisfaction , from the following link
https://engineering.careers360.com/percentile-predictor-result/1094?s=79686651621548234226
Also this tool will help you predict whether you might be eligible for JEE Advance or not , but that too is only for the purpose of reference .
For knowing about the college you can get , you can use our college predictor tool with follwing link -
https://engineering.careers360.com/jee-main-college-predictor

As per previous years cutoff , if you are from genera category , it is a bit difficult to get into NITs , but you might get admission based on SC Category reservation . But again this is not confirmed thing and just a prediction.

If you are not satisfied with your scores , you still stand a chance to improve your score by appearing in april session.
The best of the two scores will be used for those who appear in both the sessions of JEE Mains .
Once again i am informing that the above mentioned rank is only the prediction , and just for the reference purpose , and that you need to wait for official announcements which would be made in the month of april after the April session of JEE Mains is conducted and the scores of both January and April session are compliled together .

Hope this helps
Thanks !