Hi Charan,

As this is the first year for the reservation for EWS category being implemented, we still need to see how it unfolds. 

With the 75 marks you have in your hands your probable rank will be 99,688 - 119,688 with your probable percentile  89.5 to 91.5.

Most probably you will be having chance to qualify for JEE Advance but may not get any NITs. you also need to do really well in JEE Advance as there are also around 5000 good seats in IITs.

Hope it was useful to you.

Feel free to contact us for any queries.

All the best :)