Hello student documents have to be produced for verification are as mentioned below -

1)KCET applications Form (Full application Form)

2)Proof of application fee payment

3)Score card of class 10th standard

4)Score card of 12th Standard

5)Two recent passport size Photographs

6)Study certificate counter signed by the concerned BEO/DDPI

For more details refer to the link mentioned below - https://www.google.com/amp/s/engineering.careers360.com/articles/kcet-counselling/amp

Feel free to comment if you've any doubt

Good luck