Gal, let me tell you that usually the AIEEE form requires class 10 pass certificate. But even if it doesn't what's the big deal;you need to have it in any case. The thing is the exams like IITJEE and AIEEE need a lot of verification to be done. Thus, they go for the evaluation of documents beforehand. The norms slightly vary year after year. Earlier the IITJEE form didn't use to ask for enclosing these certies, but now they've started. Thus the AIEEE may start that too and I tell you the the criteria for filling up the form is the most tough for AIEEE as they keep a good scope for the rejection of the application(perhaps the voluminous amount of students appearing for the exam is the reason).

I hope I have presented my bit nicely. Plz do rate if useful.