. http://www.v-soul.com/vsoul/cfaq.html#a6copy:6. What if I fail the test? If you happen to fail the test, you will be required to attend an interview of 15-30 minutes with a citizenship judge. The judge evaluates whether you have the necessary knowledge and language abilities to become a Canadian citizen. If you do not pass the interview, you can appeal to the Federal Court or start from the beginning and apply to take the test again.