General Knowledge: Hard Mode

What this quiz asks

• Which element has the chemical symbol W?
• Which is the only sea on Earth with no land coastline?
• How many bones are there in a typical adult human body?
• Select ALL of these countries that are landlocked.
• Who painted the triptych The Garden of Earthly Delights?
• Iceland has no native mosquito population.
• The Peace of Westphalia, signed in 1648, ended which conflict?
• Is Mount Everest's summit the point on land farthest from the centre of the Earth?
• Which letter appears in no US state name at all?
• Which river flows through the centre of Baghdad?
• Which novel opens with the line "Call me Ishmael"?
• Which mineral sits at number 1 on the Mohs hardness scale?
• Which composer wrote the work known as the Unfinished Symphony?
• Triton, a large moon that orbits in the opposite direction to its planet's spin, circles which planet?
• Select ALL of these elements that are noble gases.
• Select ALL of these languages usually written in the Cyrillic alphabet.
• The Hundred Years' War lasted longer than a hundred years.
• Venus spins on its axis in the opposite direction to most planets.
• Is a peanut botanically a nut?
• The Volga, Europe's longest river, empties into which body of water?