Test: Inventions GK- 1 - SSC CGL MCQ

• Who was Marie Curie?: Marie Curie was a Polish-born physicist and chemist who conducted pioneering research on radioactivity.


• Early Life and Education: Marie Curie was born in 1867 in Warsaw, Poland. She moved to Paris to continue her studies and met her husband, Pierre Curie, who shared her interest in science.


• Research on Radioactivity: Marie Curie's research on radioactivity led to the discovery of two new elements, polonium, and radium. She coined the term "radioactivity" and was the first woman to win a Nobel Prize.


• Discovery of Radium: In 1898, Marie Curie and her husband Pierre discovered the radioactive element radium while studying pitchblende ore. They isolated radium as a pure metal in 1910.


• Impact of the Discovery: The discovery of radium revolutionized the field of medicine and led to advancements in cancer treatment. Radium was used in radiotherapy to treat tumors and remains an important element in the medical field.

Various authors have credited the invention of the thermometer to Cornelius Drebbel, Robert Fludd, Galileo Galilei or Santorio Santorio. The thermometer was not a single invention, however, but a development.

Galileo Galilei also discovered that objects (glass spheres filled with aqueous alcohol) of slightly different densities would rise and fall, which is nowadays the principle of the Galileo thermometer (shown). Today such thermometers are calibrated to a temperature scale.

Joseph F. Glidden was born in New York on Jan. 18, 1812. He invented barbed wire in 1873 and was granted the patent on Nov. 24, 1874. After a three year battle over the patent, which he eventually won, Gidden became known as the "Father of Barbed Wire".

• Roger Bacon: Roger Bacon, an English philosopher and Franciscan friar, is credited with the invention of gunpowder. He is believed to have discovered the formula for gunpowder in the 13th century.

• Military Advancements: The invention of gunpowder revolutionized warfare by introducing firearms, cannons, and other weapons that changed the dynamics of battles.


• Technological Innovation: Gunpowder also led to advancements in technology and chemistry, paving the way for further scientific discoveries.


• Impact on Society: The introduction of gunpowder had a profound impact on societies around the world, shaping the course of history and influencing geopolitical developments.

• Controversies: While Roger Bacon is widely credited with the invention of gunpowder, there are debates and controversies surrounding the true origins of this explosive substance.


• Alternative Theories: Some theories suggest that gunpowder may have been independently invented in different regions of the world, leading to conflicting claims about its true inventor.

• Thomas Alva Edison: Thomas Edison is credited with inventing the phonograph, which was the first device capable of both recording and reproducing sound. He patented the phonograph in 1877, making him a pioneer in the field of audio technology.

• Roger Bacon: Roger Bacon was an English philosopher and Franciscan friar who made significant contributions to experimental science. However, he did not invent the internal combustion engine.


• Karl Benz: Karl Benz is credited with inventing the first practical automobile powered by an internal combustion engine. While he played a crucial role in the development of the engine, he did not invent it.


• Dr. Alan M. Turing: Dr. Alan M. Turing was a British mathematician and computer scientist known for his work in breaking the German Enigma code during World War II. He did not invent the internal combustion engine.


• Otto: The internal combustion engine was invented by Nikolaus Otto, a German engineer, in 1876. Otto's engine design revolutionized transportation and industry, leading to the widespread adoption of automobiles, airplanes, and other machinery powered by internal combustion engines.

In conclusion, the internal combustion engine was invented by Otto, a German engineer, in 1876. His innovative design paved the way for the modern transportation and industrial revolution.

• John J. Loud: John J. Loud did not invent the fountain pen. He patented the first ballpoint pen.


• Sir Frank Whittle: Sir Frank Whittle was a British Royal Air Force engineer who invented the jet engine, not the fountain pen.


• Lewis E. Waterman: Lewis E. Waterman is credited with inventing the modern fountain pen. He patented the first practical version of the fountain pen in 1884, which featured a capillary feed system that prevented ink from leaking.


• E. Waterman: It is incorrect to credit E. Waterman with the invention of the fountain pen. Lewis E. Waterman is the correct individual associated with this invention.

Therefore, the correct answer is Lewis E. Waterman as the inventor of the fountain pen. He revolutionized writing instruments with his innovative design, making it easier for people to write with a reliable and efficient instrument.