Hard General Knowledge Quiz (15 Questions)By 961261pwpadmin / March 22, 2026 Challenge yourself with this hard general knowledge trivia quiz featuring 15 tough questions across a wide range of topics. General Knowledge Trivia – Hard Quiz (15 Questions) Step up the challenge with this general knowledge trivia quiz featuring hard-difficulty questions across science, geography, history, and more. Test your skills and see how well you really know the world around you. 1 / 15 What is the coldest temperature ever recorded on Earth? -50°F -150°F -100°F -128.6°F (-89.2°C) 2 / 15 Which treaty of 1925 sought to stabilize Germany's western borders? Locarno Treaties Treaty of Rapallo Kellogg-Briand Pact Treaty of Lausanne 3 / 15 Which operating system from Digital Research was marketed as a DOS-compatible alternative for PCs in the late 1980s? PC DOS 7 DR DOS Xenix OS/2 Warp 4 / 15 Which imperial ordinance of 817 attempted to regulate succession within the empire of Louis the Pious? Edict of Pistres Golden Bull of Rimini Ordinatio Imperii Capitulary of Quierzy 5 / 15 What was the name of the 1869 agreement by which the Hudson’s Bay Company transferred Rupert’s Land for annexation to Canada? Manitoba Transfer Act Treaty of Washington Royal Charter of 1670 Deed of Surrender 6 / 15 Which Tanzanian president promoted the socialist policy known as ujamaa? Julius Nyerere Jakaya Kikwete Benjamin Mkapa Ali Hassan Mwinyi 7 / 15 During which hundred-year period did the early pendulum clock appear? 16th century 15th century 18th century 17th century 8 / 15 Why can the Moon appear larger near the horizon than when it is high in the sky? Atmospheric magnification doubles its size The Moon actually swells at low altitude It is an optical illusion It moves much closer to Earth 9 / 15 Who wrote "Hope is a good breakfast, but it is a bad supper"? Samuel Johnson John Locke Francis Bacon Thomas Hobbes 10 / 15 Around which decade did the ring binder emerge in its notable early form? 1870s 1890s 1880s 1860s 11 / 15 The marine chronometer first reached a notable early form in which decade? 1740s 1720s 1730s 1710s 12 / 15 Who wrote "The ancestor of every action is a thought"? Mark Twain John Ruskin Ralph Waldo Emerson Henry David Thoreau 13 / 15 Which Bohemian reformer was burned at the stake in 1415 after the Council of Constance? Jan Hus Girolamo Savonarola John Wycliffe Thomas Cranmer 14 / 15 The chain drive is most often linked to which inventor? Scipione Riva-Rocci Hermann von Helmholtz Christiaan Huygens Su Song 15 / 15 Which 1824 battle in Peru effectively destroyed Spain's last major army in South America? Battle of Carabobo Battle of Junín Battle of Boyacá Battle of Ayacucho Your score isThe average score is 0% Related Posts Medium General Knowledge Quiz (15 Questions)Take on this medium general knowledge trivia quiz with 15 balanced questions across science, history,… Random General Knowledge Quiz (15 Questions)Try this 15-question general knowledge trivia quiz covering science, history, geography, and surprising facts. How… Easy General Knowledge Quiz (15 Questions)Try this easy general knowledge trivia quiz with 15 simple questions covering science, history, geography,… Impossible General Knowledge Quiz (15 Questions)Challenge yourself with this hard general knowledge trivia quiz featuring 15 tough questions across a…