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Each of these is a quiz question in its own right, but the answers connect to a common theme, which could be anything from plumb straightforward to bizarrely lateral. 1. Which famous title character in a horror novel is actually the scientist who created a monster, not the monster itself?

2. Which organic chemical compound with the molecular formula C6H6 is represented by a hexagon with a circle inside?

3. Which Tintin book has the young reporter of the title, aided by his dog Snowy, Captain Haddock and Tharkey, trekking across the Himalayan mountains to look for Chang Chong-Chen? 4. What machine invented by Elias Howe in 1845 improved upon previous models by holding fabric vertically, and had the needle running away from the point, starting from the eye? 5. Which Beatles’ song written by Paul McCartney (pictured) remains popular today with more than 2,200 cover versions?