Problem: In the UK, 'The Trial of the 'what', is the procedure for ensuring that newly minted coins conform to required standards?
Answer: pyx

Problem: "Which John Masefield poem begins, ""Quinquereme of Nineveh, from distant Ophir""?"
Answer: cargoes

Problem: Mount Etna and the Plain of Catania are on which island?
Answer: sicily

Problem: Which US state has nicknames including 'The Birthplace of Aviation' and 'The Buckeye State'?
Answer:
ohio