Hey Aaditya,

Application form of an Exam is the Identification proof of yourself. The information given in that form is final and can not be change. But you can request to your college for editing the info after getting the college, then you can show your EWS certificate and can also get the perks according to your certificate in your college.

But you are unable to get the perks of the EWS in the process of selection of seat. I hope this answer helps you for clearing your doubt.

Thank you !!