hello nazeema!!

Yes you should get the filled form of application for eamcet exam attested by a gazetted officer or by the principal of you college where you studied and then only you will allowed to write the exam.

It is compulsory that you get the application form attested.

Please read other instructions in the link given below :

Https://sche.ap.gov.in/EAMCET/PDF/APEAMCET2019_Important_%20Instructions.pdf

Thank you and all the very best do well!!