Famous inventions in Science is important topic for all competitive exams like SSC, Banking, Railways and State Government exams. X-Rays Wilhelm Conrad Rontgen 1895 Radio / Wireless Telegraphy Guglielmo Marconi 1894 Dynamite Alfred Nobel 1867 Barometer Evangelista Torricelli 1643 Electric Battery Alessandro Volta 1800 Electric Bulb Thomas Alva Edison 1879 Telephone Alexander Graham Bell 1876 Radioactivity Henri Becquerel / Marie & Pierre Curie Raman Effect C.V. Raman 1928 Penicillin Alexander Fleming 1928 Polio Vaccine (Injectable) Jonas Salk 1955 Vaccination (Smallpox) Edward Jenner 1796 Insulin Frederick Banting & Charles Best 1921–1923 Circulation of Blood William Harvey 1628 Blood Groups (ABO System) Karl Landsteiner 1900 Pasteurization Louis Pasteur Periodic Table Dmitri Mendeleev 1869 Aspirin Felix Hoffmann 1899 Oxygen Joseph Priestley / Carl Wilhelm Scheele 1774 Hydrogen Henry Cavendish 1766 Vulcanized Rubber Charles Goodyear 1841 Electron J.J. Thomson 1897 Proton / Nucleus Ernest Rutherford 1911 Neutron Neutron 1932 Computer (Mechanical) Charles Babbage World Wide Web (WWW) Tim Berners-Lee 1989 Transistor John Bardeen, Walter Brattain, William Shockley 1947–1948 Air Conditioner Willis Carrier 1902 Printing Press Johannes Gutenberg 1440 Aeroplane Wright Brothers 1903 Mobile Phone Martin Cooper 1973 Steam Engine James Watt 1781 Diesel Engine Rudolf Diesel 1892

Here in this post i am giving important list of 50 Phobias to remember for any kind of competitive exams. I was curated most important list only. Ailurophobia Fear of cats Arachnophobia Fear of spiders Apiphobia Fear of bees Cynophobia Fear of dogs Equinophobia Fear of horses Entomophobia Fear of insects Herpetophobia Fear of reptiles Ophidiophobia Fear of snakes Ornithophobia Fear of birds Ichthyophobia Fear of fish Acrophobia Fear of heights Thalassophobia Fear of the ocean or deep sea Anemophobia Fear of wind Pyrophobia Fear of fire Astraphobia Fear of thunder and lightning Nyctophobia Fear of darkness or night Chionophobia Fear of snow Hydrophobia Fear of water Cryophobia Fear of extreme cold or ice Dendrophobia Fear of trees Androphobia Fear of men Xenophobia Fear of strangers or foreigners Anthropophobia Fear of people or society Philophobia Fear of falling in love Autophobia Fear of being alone Pedophobia Fear of children Demophobia Fear of crowds Gamophobia Fear of marriage or commitment Algophobia Fear of pain Bacteriophobia Fear of bacteria or germs Hemophobia Fear of blood Iatrophobia Fear of doctors Trypanophobia Fear of injections or needles Necrophobia Fear of dead bodies or death Tomophobia Fear of surgical operations Nosophobia Fear of falling ill Thanatophobia Fear of death or dying Pharmacophobia Fear of medicines Agoraphobia Fear of open or public places Arithmophobia Fear of numbers Triskaidekaphobia Fear of the number 13 Bibliophobia Fear of books Technophobia Fear of advanced technology Chromophobia Fear of colors Phasmophobia Fear of ghosts Chronophobia Fear of time or passing of time Hodophobia Fear of travel Claustrophobia Fear of confined or enclosed spaces Glossophobia Fear of public speaking

In this post, i will give types of scientists and there studies for all competitive exams. Astronomer Studies Stars and Galaxies Geologist Studies the Earth Biologist Studies Living organisms Chemist Studies Chemicals and their Reactions Meteorologist Studies Weather and Climate Psychologist Studies the Human Mind and Behavior Physicist Studies Matter and Energy Mathematician Studies Mathematics and Logic Botanist Studies Plants Zologist Studies Animals Paleontologist Studies Ancient Life Through Fossils Oceanographer Studies the Oceans Pathologist Studies Diseases Archaeologist Studies Human History Through Artifacts Geneticist Studies Genes and DNA Entomologist Studies Insects Ornithologist Studies Birds Mycologist Studies Fungi Microbiologist Studies Microorganisms Virologist Studies Viruces Ecologist Studies Eco Systems and the Enveronment Volconologist Studies Valcanoes Seismologist Studies Earthquakes Glaciologist Studies Glaciers and Ice Hydrologist Studies Water Resources Petrologist Studies Rocks Meneralogist Studies Minerals Herpetologist Studies Reptiles and Amphibians Lepidopterist Studies Butterflies and Moths Ichthyologist Studies Fish