I got 81.16 percentile in jee mains paper 2,since I'm in o.b.c category which college can I expect for my pepercente.

Hello aspirant,
You got very good percentile.The expected rank for your percentile is calculated based on the formula:
Rank=(100- NTA percentile)*145386/100.
Your expected rank may be 27,390(approximately).
This rank may vary after the official results which will be released in the month of April.
So please wait for the official cut offs and prepare well for the exam.
As of now you may get private colleges but to get government or nits you have to work hard.
Hope you understood and if you have any questions please contact us.
Thank you!!