Current Affairs MCQs – Page 77 (Q761-770)

Technetium, first artificially created in an Italian laboratory in 1937 by scientists Carlo Perrier and Emilio Segre, is considered the first artificial, or synthetic, chemical element ever produced, as it does not occur in any significant naturally stable form on Earth. Its name derives from the Greek word technetos, meaning artificial, reflecting its status as a laboratory-made element. Americium, Plutonium and Neptunium are tempting distractors, as each is another significant synthetic element created somewhat later, during the 1940s as part of wartime nuclear research programs. Technetium has since found important practical applications in nuclear medicine, particularly for diagnostic imaging procedures.

Hammurabi, the sixth king of the ancient Babylonian Empire, is credited with one of the world's earliest known written legal codes, dating to around 1754 BC, inscribed on a large stone stele and covering a wide range of civil and criminal matters. The code is particularly famous for its principle of proportional retributive justice, often summarized as an eye for an eye. Sargon of Akkad, Ashurbanipal and Nebuchadnezzar II are tempting distractors, as each was another significant ancient Mesopotamian ruler, though none is specifically credited with this particular early legal code. The Code of Hammurabi remains an invaluable historical source for understanding ancient Babylonian society, law and daily life.

The Sumerians of ancient Mesopotamia are generally credited with inventing the wheel, around 3500 BC, initially developed for use in pottery-making before later being adapted for transportation on carts and chariots. This innovation is considered one of the most transformative technological developments in early human civilization. Indus Valley people, Ancient Egyptians and Ancient Chinese are tempting distractors, as each was another significant early civilization that later adopted and further developed wheel-based technology. The wheel's invention fundamentally transformed transportation, trade and warfare across the ancient world in the millennia that followed.

China is credited with the earliest development and use of gunpowder, dating back to around the 9th century AD, initially discovered by alchemists reportedly searching for an elixir of immortality rather than a weapon of war. Its explosive properties were gradually applied to military technology, including early rockets, fireworks and eventually firearms. Persia, Arabia and India are tempting distractors, as each later adopted and further developed gunpowder-based technology after it spread westward from China along established trade routes. Gunpowder's spread across Asia, the Middle East and eventually Europe fundamentally transformed the nature of warfare over subsequent centuries.

The Obninsk Nuclear Power Plant, opened in the Soviet Union in 1954, is regarded as the world's first nuclear power plant to successfully generate electricity for a broader power grid, marking a major milestone in the peaceful civilian application of nuclear technology. Its relatively modest output demonstrated the practical feasibility of nuclear power generation for the first time. Chernobyl, Kursk and Kola Nuclear Power Plants are tempting distractors, as each was another significant, but considerably later, Soviet or Russian nuclear facility, with Chernobyl notably becoming infamous instead for its catastrophic 1986 disaster. Obninsk's pioneering role helped launch the broader global development of civilian nuclear power over the following decades.

Roald Amundsen led the first expedition to successfully navigate the Northwest Passage by sea, completing the challenging Arctic voyage between 1903 and 1906, connecting the Atlantic and Pacific Oceans through Canada's ice-choked northern waters. His painstaking, multi-year journey succeeded where numerous earlier expeditions, including the ill-fated Franklin expedition, had previously failed. Ernest Shackleton, John Franklin and Robert Peary are tempting distractors, with Franklin's own earlier 1845 expedition famously disappearing entirely while searching for the same elusive passage. Amundsen later went on to lead the first successful expedition to reach the South Pole in 1911, cementing his legacy as one of history's greatest polar explorers.

An Italian expedition completed the first successful ascent of K2, the world's second-highest mountain, in 1954, with climbers Lino Lacedelli and Achille Compagnoni reaching the summit after an extraordinarily difficult and dangerous climb. K2, located on the border between Pakistan and China, is widely regarded as one of the most technically challenging and deadly of the world's eight-thousand-metre peaks to climb. French, British and German expeditions are tempting distractors, with a French expedition having instead achieved the historic first ascent of Annapurna just four years earlier, in 1950. K2 remains a hugely significant peak for Pakistan's mountaineering tourism industry, located within the Karakoram range.

The United States became the first country to successfully develop and detonate a hydrogen, or thermonuclear, bomb, codenamed Ivy Mike, in a test conducted in the Pacific in November 1952, releasing an explosive yield vastly greater than the earlier atomic bombs used in World War II. This test marked a dramatic and dangerous escalation in the nuclear arms race between the United States and the Soviet Union. United Kingdom, China and Soviet Union are tempting distractors, with the Soviet Union conducting its own first hydrogen bomb test shortly afterward, in 1953. The development of hydrogen bombs significantly heightened Cold War tensions and fears of potential global nuclear catastrophe.

Mariner 9, an American spacecraft, became the first spacecraft to successfully orbit another planet, entering orbit around Mars in November 1971, arriving just as a massive planet-wide dust storm was obscuring much of the Martian surface from view. Once the storm cleared, Mariner 9 captured detailed images revealing previously unknown Martian features, including enormous volcanoes and canyon systems. Pioneer 10, Viking 1 and Mars 3 are tempting distractors, with Mars 3, a Soviet spacecraft, actually achieving the first successful soft landing on Mars shortly afterward, in December 1971, though not the first orbital mission. Mariner 9's detailed mapping data proved invaluable in planning later Mars missions, including the subsequent Viking landers.

Steve Fossett, an American businessman and aviator, became the first person to fly solo, non-stop and unrefueled around the world, completing the remarkable feat in 2005 aboard a specially designed aircraft called the GlobalFlyer, covering roughly 23,000 miles in under 68 hours. His achievement built upon earlier round-the-world flight milestones achieved by other aviators using multi-person crews or refueling stops. Bertrand Piccard, Dick Rutan and Brian Jones are tempting distractors, with Rutan having earlier co-piloted the historic 1986 Voyager flight alongside Jeana Yeager, though that flight was not solo. Fossett was also a record-setting balloonist and sailor before his death in a plane crash in 2007.