Hello Raghava Reddy

Yes. It is neccesary to show the PUC Study Certificate during the document verification. The minimum eligibility criteria for pursuing MBA is to have at least 50% marks in class 10, class 12 and in graduation. Thus, in order to prove your eligibility, you need to show the PUC study certificate to the authorities during document verification of PGCET. 

If you have lost or misplaced it, then I suggest you to contact the regional center of the board from where you passed your class 12th and give them your details so that they can issue you a duplicate PUC study certificate. You might even contact the school from where you passed, even they might help you in getting a duplicate copy of your PUC study certificate.

The mentioned documents are the list of documents that you need to carry for Karnataka PGCET MBA Counselling-

• Karnataka PGCET MBA Admit Card 2018
• SSLC or 10th class marks card
• 2nd PUC Marks card or class 12th marks card
• Study certificate to show that the candidate has previously studied in Karnataka for at least seven years
• Qualifying exam marks card/mark-sheet
• Domicile Certificate, if applicable

Kindly refer the mentioned below link for more information about the counselling

 Https://bschool.careers360.com/articles/karnataka-pgcet-mba-counselling

Hope it helps you.