General Science is an Important section in any competitive exam and in Railways exams it plays a crucial role. It is not difficult to learn basic general Science if we plan wisely. Cracku brings to you daily General Science Twenty-20 updates covering one subject, starting from 20-03-2018. Learn and try to remember only so much that is provided in our capsule every day and we are sure, you will master General Science Section before the exam.
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Chemistry 20 Important One Liners
| Element that doesn’t occur in nature but is produced artificially | Plutonium |
| Popular Allotrope of Oxygen which is highly reactive in nature | Ozone |
| World’s Biggest and most Powerful Nuclear Powered Ship | SIBIR launched in Russia recently |
| World’s first Molecular Robot (Millionth of Millimeter in Size) |
Created by Scientists from University of Manchester (Made from elements of Carbon, Hydrogen, Oxygen and Nitrogen) |
| Scientist credited with the Discovery of Electrons | J J Thomson |
| Organization which developed new technique to produce bioethanol from discarded Cotton Stalks | CSIR- National Institute for Interdisciplinary Science and Technology |
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| Name of the World’s first Wind Farm built across coast of Scotland Country | Hywind |
| India’s first Bio-CNG(Bio-methane) Bus developed recently by | Tata Motors |
| Atoms of same element having same Atomic Number but different Mass Numbers | Isotopes |
| A Mexican chemist and Noble Prize winner for discovery of theory developed on depletion of Ozone due to CFCs | Mario Jose Molina |
| Scientist credited with the discovery of the covalent bond | Gilbert N. Lewis |
| Chemical mainly used as Preservative in Food | Benzoic Acid |
| Scientist credited with the discovery of Fluorine | Henri Moissan |
| Substance used to retard the setting of the Cement | Gypsum |
| Most commonly used foaming agent in Fire Extinguishers | Aluminum Hydroxide |
| Chemical with characteristic odors are commonly used in synthetic flavors, perfumes, and cosmetics | Esters |
| Main Ore of Mercury | Cinnabar |
| Chemical name of Green Vitriol – Hydrated Salt | Ferrous Sulphate |
| Metals kept in kerosene to avoid combustion in open air due to their high reactivity | Potassium and Sodium |
| Chemical name of Lime Water | Calcium Hydroxide |
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