Assuming you are asking for Jee Advanced so the exam pattern of Jee advanced keeps on changing year wise so it is quite difficult to predict any marks range but generally it would be bettet to get more than 60% as this will be the safe score for the same.

Also, you can go through the below provided article to know the cut off for Jee advanced 2017 -

Cut off 2017

Hope this helps!!!

If you are asking cut off to get admission in NITs then you have to score more then 125 marks under general category in other state quota. Cut off varies branches -wise.

If you are asking for qualifying marks to appear for JEE Advanced under general category then you have to score more then 80 marks.

You can check the cut off trend from the given below link