if i have filled my aieee form with black gel pen, will my fprm be rejected??

Black ink is okay but using gel ink is the cause of the possible problem. Still there should not be an issue and you form must not be rejected as Object-relational mapping computer software programming technique should pick it up as you have used black ink. It would be compatible to the system and

No it will not be rejected.

You should read instruction first. all institute mention all basic information on application form.