You can download the challan form of KCET  by following the steps mentioned below:

1. Login to official website and open the application form mentioned there.
2. Take the printout of challan format from the official website of KCET.
3. Go to bank and pay the required fee.
4. Then collect the challan receipt from the bank.

You need to follow the link for the process: kea.kar.nic.in/ (http://kea.kar.nic.in/)

Hope it would be helpful.