Hi Savaram,

If you get 75 marks in JEE main exam, you rank would be approximately in between 1,20,000 to 1,30,000.  Also, Above is the range of your possible rank. The predicted rank may vary due to JEE Main tie breaker rules for the same score. For NITs, You have to secured minimum of 30,000 rank, which would be equal to approx 160 marks.

If you have secured this rank you have a chance to get these colleges:

Lakshmi Narayan college of technology,Bhopal

VIT Pune

MIT Academy pune

PEC Mohali

Ujjain engineering college

These are few colleges, you will get on these marks.