Hello,

Indeed you can attach the acknowledgement form of your application for OBC certificate along with your CLAT application provided that the official regulations permit this. Most entrance exams and institutes also accept proof of certificate during the initial process, like an acknowledgment receipt, considering that the final, original certificate would be produced at the time of document verification.

However, one should go through the CLAT instructions or contact CLAT authorities for verification in case rules are different. In case this is possible, you must obtain an original OBC certificate much prior to the verification process that may arise in the course of the admission procedure. Keep all the documents and proofs related to your OBC certificate with you while moving ahead for any future actions.