And the results are in! 80%, but missed too many "Australian values" questions to qualify for citizenship. It's probably for the best.
Here's the questions I missed, with their correct answers:
Question 2: What are the colours of the Australian Aboriginal Flag?
a. Black, red and yellow
Question 13: What is a referendum?
b. A vote to change the Australian Constitution
Question 15: Which of these is a role of the Governor-General?
b. Signing all Bills passed by the Australian Parliament into law
Question 17: Should people in Australia make an effort to learn English?
c. Yes, English is the national language of Australia and it helps to get an education, a job, and to integrate into the community
I would say Questions 2, 13, and 15 are pretty low in practical value, at least to a non-Australian. Knowing the heraldry of ethnic groups within your country is probably more useful than not. Question 17 is obviously pretty important. I should have guessed that a nation with mandatory voting would also have an official language. What surprised me the most is that "referendum" is a term of art, denoting a very specific kind of vote, in Australia.