Current Affairs MCQs – Page 80 (Q791-800)

The USS Nautilus, commissioned by the United States Navy in 1954, was the world's first nuclear-powered submarine, capable of remaining submerged for vastly longer periods than earlier diesel-electric submarines, which required regular surfacing to recharge their batteries. In 1958, the Nautilus also became the first vessel to successfully reach the geographic North Pole while traveling completely submerged beneath the Arctic ice. USS Seawolf, USS Triton and USS Skate are tempting distractors, with USS Triton later achieving the first fully submerged circumnavigation of the globe in 1960, and USS Seawolf being another early nuclear submarine developed shortly after the pioneering Nautilus. The Nautilus is now preserved as a museum ship in Groton, Connecticut.

UNIVAC I, delivered in 1951, is considered the first commercially successful digital electronic computer used for general business applications, initially built for the US Census Bureau before being adopted more broadly by businesses and government agencies. It gained significant public fame in 1952 when it was used to correctly predict the outcome of that year's US presidential election on live television. IBM 701, ENIAC and Colossus are tempting distractors, with ENIAC being an earlier, though not commercially marketed, computer developed during World War II, and Colossus being a highly secretive British wartime code-breaking computer. UNIVAC's commercial success helped launch the modern computer industry, paving the way for IBM's later dominance in the sector.

German scientists first synthesized aspirin in a stable, medically usable form in 1897, working at the Bayer pharmaceutical company, with chemist Felix Hoffmann credited with the key breakthrough that made the compound both effective and gentler on the stomach than earlier, cruder forms of salicylic acid. Aspirin quickly became one of the most widely used medications in the world for pain relief, fever reduction and inflammation. France, Britain and Switzerland are tempting distractors, as each had other significant pharmaceutical research traditions during this period, though Germany specifically is credited with this particular breakthrough. Aspirin remains in widespread medical use today, including for its later-discovered benefits in reducing the risk of heart attacks and strokes.

Germany became the first country to introduce a national old-age pension scheme, in 1889, under Chancellor Otto von Bismarck, building on his earlier health and accident insurance reforms as part of a comprehensive social welfare system aimed at improving conditions for German workers. The pension scheme provided financial support to elderly citizens who could no longer work, originally set at the relatively advanced qualifying age of 70. Britain, Sweden and France are tempting distractors, as each later developed its own national pension systems, generally decades after Germany's pioneering 1889 reform. Bismarck's broader social insurance legacy is widely regarded as having laid essential groundwork for the modern welfare state adopted by many countries in the 20th century.

Adolf Erik Nordenskiold, a Finnish-Swedish explorer, captained the first ship to complete a voyage through the Northeast Passage along Russia's Arctic coast, achieving the historic feat between 1878 and 1880 aboard his ship the Vega, connecting the Atlantic and Pacific Oceans along Siberia's northern shore. His remarkable expedition demonstrated for the first time that this treacherous northern sea route was navigable. Otto Sverdrup, Roald Amundsen and Fridtjof Nansen are tempting distractors, as each was another notable Scandinavian polar explorer of a similar era, with Amundsen instead achieving fame for navigating the separate Northwest Passage and later reaching the South Pole. Nordenskiold's pioneering Arctic voyage significantly advanced scientific understanding of the polar regions.

Mauveine, discovered accidentally in 1856 by British chemist William Perkin while he was actually attempting to synthesize an artificial form of the anti-malarial drug quinine, is considered the first synthetic dye ever produced, creating a vivid purple color previously achievable only through expensive, labor-intensive natural sources. Perkin's discovery, made when he was just 18 years old, launched an entirely new synthetic dye industry and made him wealthy. Aniline Black, Alizarin and Indigo are tempting distractors, as each is another significant dye, with Indigo in particular being a much older natural dye rather than Perkin's later synthetic discovery. Mauveine's success helped establish the broader field of synthetic organic chemistry that later gave rise to numerous other important industries, including pharmaceuticals.

The United States launched the first successful weather satellite, TIROS-1, in April 1960, providing the first-ever satellite images of Earth's cloud patterns and weather systems from space, a groundbreaking advance for meteorological forecasting. Its success demonstrated the enormous practical value of using satellites to monitor global weather conditions from orbit. United Kingdom, France and Soviet Union are tempting distractors, as each later developed its own significant weather or Earth-observation satellite programs, but generally after the pioneering American TIROS-1. Weather satellites have since become an indispensable tool for tracking hurricanes, storms and broader climate patterns worldwide.

The Montgolfier Brothers, Joseph-Michel and Jacques-Etienne, French paper manufacturers, conducted the first public demonstration of a hot air balloon carrying passengers in 1783, sending a sheep, a duck and a rooster aloft before later that same year successfully launching the first human passengers into the air. Their pioneering hot air balloon flights marked humanity's first true achievement of manned flight. The Wright Brothers, Henri Giffard and Jean-Pierre Blanchard are tempting distractors, with the Wright Brothers achieving the first powered airplane flight over a century later, in 1903, and Giffard and Blanchard each making other separate, later contributions to early balloon and airship technology. The Montgolfier brothers' achievement sparked immense public fascination with the possibility of human flight across Europe.

The Corinth Canal, opened in Greece in 1893, was the first canal to allow ships to cross the narrow Isthmus of Corinth, connecting the Gulf of Corinth with the Saronic Gulf and significantly shortening the sea route between the Adriatic and Aegean seas by avoiding a lengthy voyage around the Peloponnese peninsula. The idea for such a canal had actually been considered since antiquity, with even Roman Emperor Nero reportedly attempting to begin digging it centuries earlier. Suez Canal, Kiel Canal and Panama Canal are tempting distractors, as each is another significant and much larger canal built in different parts of the world. The Corinth Canal's narrow width limits its use today primarily to smaller vessels and has made it more of a notable tourist attraction than a major shipping route.

France was the first country to establish a modern, standardized system of weights and measures, the metric system, in the 1790s, developed during the French Revolution as part of a broader effort to rationalize and standardize measurements based on scientific principles rather than inconsistent regional traditions. The system's basic units, including the metre and the kilogram, were carefully defined using natural physical references. Germany, Britain and Italy are tempting distractors, as each later adopted the metric system, generally well after France's pioneering 1790s introduction. The metric system has since become the dominant measurement standard used by the vast majority of countries worldwide, with the United States remaining one of the few notable holdouts.