Important Discoveries in Chemistry-for Competitive Exams
Chemistry topic- “Important Discoveries in Chemistry-रसायन विज्ञान की महत्वपूर्ण खोजें”, is important for all competitive exams like CET- Common eligibility Test, SSC CGL, SSC CHSL, RRB NTPC, UPSC and for other state civil services exams. In these exams, almost 4-5 questions are coming from Chemistry. Let’s start the topic – Important Discoveries in Chemistry:-
Discoveries in Chemistry:-
(रसायन विज्ञान की महत्वपूर्ण खोजें)
There is a list of significant and famous discoveries in chemistry. A scientist explores the nature of the universe. Our curiosity for knowledge, is the drive behind all the discoveries. There are numerous scientific discoveries that influenced the way we think and live.
“Chemistry is the branch of science that deals with the composition, structure and properties of matter and also how and why matter undergoes certain changes”.
Discovery in Chemistry plays an important role in chemical industries for manufacturing fertilizers such as urea, calcium superphosphate, sodium nitrate, and Ammonium Sulphate. These chemicals have helped greatly in increasing the yield of fruits, vegetables, and other crops.
Discovery in Chemistry field also improved the quality of our life. Chemistry in our everyday life provide us acids, salts, dyes, polymers, drugs, soaps, detergents, metals, alloys and other inorganic and organic chemicals
Discoveries in Chemistry for Competitive Exams
NAME OF DISCOVERY | YEAR OF DISCOVERY | SCIENTIEST NAME |
Atom |
1808 |
John Dalton |
Electron |
1897 |
Electron |
Proton |
1919 |
Ernest Rutherford |
Neutron |
1932 |
James Chadwick |
Photon |
1905 |
Albert Einstein |
Radioactivity |
1896 |
Antoine Henri Becquerel |
Atomic Structure |
1913 |
Neil Bohr & Rutherford |
Nucleus |
1911 |
Ernest Rutherford |
Meson |
1935 |
Yukawa Hideki |
Positron |
1932 |
Carl Anderson |
Nuclear fission |
1938 |
Lise Meitner, Otto Robert Frisch, Otto Hahn and Fritz Strassmann. |
RDX |
1898 |
Georg Friedrich Henning |
Molecules |
– |
Avogadro |
Helium |
1868 |
William Ramsay |
Neon Lamp |
1915 |
Georges Claude |
Oxygen |
1775 |
Antoine Laurent Lavoisier |
Ozone |
1839 |
Christian Schonbein |
Air is the mixture of gases |
– |
Antoine Laurent Lavoisier |
Old-Periodic Table |
1869 |
Dmitri Mendeleev |
Modern periodic table |
1913 |
Henry Gwyn-Jeffreys Moseley(Moseley) |
Atomic number |
1910 |
Henry Gwyn-Jeffreys Moseley(Moseley) |
Penicillin |
1928 |
Alexander Fleming |
Diesel Engine | 1892 | Rudolf Diesel |
Centigrade Scale |
1742 |
Anders Celsius |
Chlorine |
1774 |
Karl Wilhelm Scheele |
Dynamite |
1867 |
Alfred B. Nobel |
Atom Bomb |
1945 |
Julius Robert Oppenheimer |
Hydrogen |
1766 |
Henry Cavendish |
Laser |
1960 |
Dr. Charles H. Townes and
Arthur Leonard Schawlow |
Light Bulb |
1854 |
Heinrich Goebel |
Radium |
1898 |
Marie & Pierre Curie |
Radar | 1922 | Dr. Albert H. Taylor & Leo C. Young |
Rubber (vulcanized) |
1841 |
Charles Goodyear |
Rubber Tyre |
1887 |
John Dunlop |
Rocket Engine |
1926 |
Robert H. Goddard |
Radio |
1894 |
Guglielmo Marconi |
Richter Scale |
1935 |
Charles Richter |
Thermometer |
1593 |
Galileo |
X-ray |
1895 |
Wilhelm Conrad Roentgen |
Artificial radioactivity |
1934 |
Irene Joliot-Curie and Frederic Joliot-Curie. |
U.V. rays |
1801 |
Johann Wilhelm Ritter. |
Electron microscope |
1931 |
Max Knoll and Ernst Ruska |
Nuclear reactor |
1942 |
Enrico Fermi |
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