Hello,

If you are not able to provide the proof of your category i.e. if you unable to provide the OBC category certificate then you will not be considered as an OBC candidate. Your application won't cancel but you will be considered as a general category student. So, you won't be able to take the benefits provided for OBC candidates.

You can check more about CTET from the link below

https://competition.careers360.com/exams/ctet

Good luck!