NIT

Yes, NITs will accept your improved score only if you have only 73% in your 12th borad. You are adviced to appear for improvement exams only if you are from general category as the minimum requirement to appear for JEE is 75% for general. But if you are from other category such as SC/ST, you need not to appear for improvement exam as you're already eligible for JEE. So the answer of your question is yes, the NITs will consider your improved score only and you're adviced to appear for improvement exam only if you're from general category. 

Newer NITs and IIITs: Some newer NITs and IIITs may have higher cutoffs, potentially accommodating candidates with ranks up to 70,000. However, securing a seat in CSE or EE at these institutions with a 72,000 OBC rank is still uncertain.

Private engineering colleges often have more flexible admission criteria. Institutions like Manipal University, VIT University, and LPU may offer CSE and EE programs with a 94 percentile, though it's essential to verify their specific admission requirements.

With a 30685 EWS rank in JEE Mains, you can in all likelihood anticipate to get admission into newer NITs or less famous branches in installed NITs, potentially consisting of NITs like NIT Agartala, NIT Manipur, NIT Silchar, NIT Patna, or NIT Delhi for certain non-middle branches depending at the particular software and availability of seats.

Getting NIT IIT with rank 70785 wiill be very difficult.if you want you can go for these colleges -

IIIT Kottayam*: The closing rank for OBC category in CSE was 11,452.

- *IIIT Kalyani, West Bengal*: The closing rank for OBC category in CSE was 12,809.

• *IIIT Dharwad*: The closing rank for OBC category in CSE was 12,152.

Or you can try next year with better rank