This was basically the first Jim Crow law to stop black people from voting. I would love a more informed voting pool but this would 100% immediately be used to disenfranchise specific groups.
Just make the questions difficult for specific groups to know on average, or fill it full of trick questions with bad faith answers.
The Bakesmith kneads dough with a KNEAD! sound The Bakesmith: I wonder what ever happened to that knight? The Bakesmith: SIGH! When do I get to go on an adventure? Pizza Doughlem: BLUU~UURGH! Citizens of Hiltshire: HELP! A Pizza Doughlem is attacking the Kingdom! The Bakesmith pulls out a sword with a circular pizza cutting blade. He gives a sinister smile.