JEE Main Percentile

NTA score is percentile only.

Your percentile is very good but not enough to get CSE branch in NIT. You require at least 98 percentile for getting CSE in NIT.

It is very difficult to get any NIT at this percentile in OBC category, you may go for state government Engineering colleges and can get a good branch also there.

No, you cannot get admission because cutoff for OBC is 74 percentile.

The tentative qualifying marks for GEN category (common rank list) students is 89.75 for GEN (EWS category) is 78.21. JEE Main score of 250 or higher is regarded as good and AJEE Mains score of 85-95 percentile is ideal for getting into NITs and IITs through the exam. Candidates must also be in the top 15,000 to 20,000 ranks to be accepted into the best NITs and IITs.

It's always better to enter JEE percentile, to gain more attention in forms, but if your percentile is less, and is not required to mention, then don't.

It would be around 89-90 percentile, as it also depends on the number of students in that shift.

There are various reputed engineering institutes that accept the 50-60 percentile in JEE Main. One need minimum 50 % in most of the cases for aerospace engineering. You can search about top 10 colleges for aeronautical engineering. Also you can use Shiksha predictor.