Dear candidate,

As you belong to GEN-EWS category you need to score  above 78 marks to qualify for JEE Main exam but in order to get a seat in NITs you need to score more marks i.e., 150 to 170+ marks then there will more chances for you getting an NIT seat that means you need to score more marks as possible then you will have more chances for getting a seat in NITs.

All the best!

Hope this information helps.