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Most important GS Topics for SSC CGL Exam .Topics taken from past 3 years papers

Sandeep Kankanala
I love teaching General Knowledge with Mnemonic Tricks.Appeared IBPS ,RRB NTPC Mains .Educator at YouTube With 150K subscribers ,60lakh view

U
Unacademy user
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  1. unacademy Follow me on the Unacademy Learning App 119.8k4 Sandeep kankanala Educator since April 2018 love teaching General Knowledge with Mnemonic Tricks Appeared IBPSRRB NTPC Mains.Educator at YouTube With 150K subscribers 60lakh view Get updates about new courses Watch all my lessons .Download slides and watch offline 6.8k 7 Followers Folowing Couse Message- All courses Geography GK Tricks | General Science I Indian History I Geography 43 (7 ratings Q Sandeep Kankanala Sandeep kankanala o Physics GK Tricks on Important Topics From Previous Papers 3(3 ratings) Sandeep kankanala


  2. Tricks to Remember Branches of Agriculture


  3. Facts about Solar system


  4. Planets and Its Color


  5. 1 Mars - Red 2 Saturn - Yellow 3.Venus - Yellow (Morning and Evening Star ) 4 Earth-Blue 5.Mercury - Grey 6.Uranus Pale Blue 7 Jupiter-Orange 8 Neptune-Pale Blue


  6. Planets and Number of Natural Satellites (Moon)


  7. August 11, 2014 A natural satellite or moon is a Table 1.5 Position from Sun Moons celestial body that orbits a planet. The Earth has one moon. Other planets in our solar Name system have more than one moon. Some planets in our solar Mercury system have no moons. able 1.5 summarizes the solar system data Planet Number of Venus Earth Mars Jupiter Saturn Uranus Neptune 8 2 According to Table 1.5, Venus 4 2 occupies which position from the Sun? the Jupi 63 A. 1 B. 2 C. 3 D. 4 6 7 27


  8. Important Facts to Remember about Bones


  9. Facts about Elements


  10. Facts about period Table


  11. Common and Scientific Na mes of Chemicals


  12. Sodium Compound Common Name Chemical Name Formula Washing soda Sodium carbonate Na2CO3 Baking soda Sodium bicarbonate NaHCO 3 Sodium tetraborate decahydrate Na,B,0,10H2O Borax Aqueous sodium chloride solution Brine NaCI Caustic soda Sodium hydroxide NaOH Hypo Sodium thiosulfate Na2S203


  13. Other Compounds Common Name Formula Aluminium potassium KAI(SO4)2.12H2O sulfate Nitrohydrochloric acid HNO3 3 HCI Acetylsalicylic acid Aluminium oxide Alum Aqua regia Aspirin Corundum (ruby, sapphire) Dry ice Epsom salts Heavy Water Pearl Ash Plumbago Prussic acid Jeweller's rouge Saltpeter Table sugar Talc or talcum Vinegar 9'84 Al O 2 3 Solid Carbondioxide CO2 Magnesium sulfate Deutrium oxide Potassium carbonate K2CO Graphite Hydrogen cyanide Ferric oxide Potassium nitrate Sucrose Magnesium silicate Mg3Si4010(OH)2 Acetic acid MgSO4 7H2O 2HO or D,O HCN Fe20 KNO3 C12H22011 CH3CO2H


  14. Chemical used in cloud seeding Silver lodide Chemical used as a fixing agent in photography and also for washing Sodium thiosulphate as a germicide Chemical commonly used in explosive devices as well as fertilisers Ammonium Nitrate The substance which is used to make capsule shells in pharmaceutical industry. The substance is also used as gelling agent in cooking. Gelatin The sugarcane industry product being blended with petrol to reduce pollution and also to reduce the import burden of petrol in India Ethanol The organic compound widely used as a cleaning agent in dry(perchloroethylene cleaning Tetrachloroethylene


  15. Gases Facts to Remember Fact to remember Name of the gas Gas most abundant in earth's atmosphere Percentage of oxygen in earth's atmosphere The lightest gas The heaviest gas Tear Gas Marsh gas Laughing gas Nitrogen (78%) 21% (appx) Hydrogen Radon Ammonia (NH3) Methane Nitrous Oxide (N20) Mainly methane with small quantities of ethane and propane Methane, CO2 and hydrogen Hydrogen Sulphide (H2S) Natural gas Gobar gas Gas with foul smell Gas mixed with oxygen and given to patients with restricted breathing Helium A major air pollutant, the percentage presence of which is checked in vehicle pollution test Carbon monoxide


  16. The gas which is responsible for the formation of brown air in traffic Nitrogen Dioxide congested cities Major gaseous pollutant of areas Suphur dioxide located near thermal power station Strong smelling substance added to LPG Gases responsible for depletion of ozone layer Ethyl Mercaptan or Ethanethiol Chloroflouro carbons Sulphur dioxide Acetylene Argon Mercury vapour Butane, Propane and Ethane Freon (Diflouro Dichloro Methane) Nitrous Oxide Gas responsible for acid rain Gas used in gas welding and also artificial ripening of fruits Gas used in electric bulbs Gas used in flourescent lamps Gas used in LPG Gas used in refrigeration Gas used as an anaesthetic in dental surgery


  17. Facts about Metals


  18. Metal which pollutes the air of cities having large number of vehicles Lead (reason for using unleaded petrol) Metal used in the filaments of electric heaters Nichrome Metal used as radiation shield Lead Metal into which Uranium turns when it loses all its radioactivity Lead Metal used for making boats because it does not corrode by seawater Titanium


  19. Important Alloys


  20. Metal Ore Aluminium Berylliumm Chromium Cobalt Copper Gold Iron Lead Manganese Mercury Nickel Tin lungsten Silver Uraniumm Zinc Bauxite Beryl Chromite Cobaltite Bornite, Chalcocite Quartz Magnetite Galena Pyrolusite Cinnabar Pentlandite Casseterite Wolframite, Scheelite Argentite Uraninitee Sphalerite


  21. nstruments and their uses nstrument Use Instrument for measuring radiation by means of the rise in temperature, Instrument for measuring the density of liquids. Instrument for measuring the humidity of the air or a gas Bolometer Hydrometer Hygrometer Instrument for measuring the amount of water in milk Lactometer Anemometer Salinometer Altimeter Instrument for measuring wind force Instrument for measuring the salinity of a solution Instrument for measuring the altitude of an aircraft etc. Instrument for detecting and measuring electric currents Galvanometer


  22. Scopes Optical instrument using lenses or mirrors to magnify distant Telescope objects. Microscope to the naked eye Stethoscop Instrument used in listening to the heart, lungs, etc. [Greek Instrument with lenses for magnifying objects or details invisible stethos breast] Kaleidosco Tube containing mirrors and pieces of coloured glass etc pe producing changing reflected patterns when shaken. Instrument used to examine the interior of a hollow organ or Endoscope cavity of the body Oscilloscop Device for viewing oscillations by a display on the screen of a cathode-ray tube. Apparatus with a tube and mirrors, by which an observer in a trench, submerged submarine, or at the back of a crowd etc., can see things otherwise out of sight Periscope


  23. Graphs Instrument for measuring growth in plants Crescograph Instrument that records the force, direction, etc., of earthquakes. Seismograph Cardiograph Instrument recording heart movements. Signalling apparatus reflecting sunlight in flashes. Heliograph Radiograph Instrument recording the intensity of radiation


  24. Metal Processes It is a process in which a metal is heated to a specific temperature and then cooled slowly in order to make the metal soft enough for easy cutting and shaping. Hardening It is a process in which a metal is heated to a specific temperature and then cooled suddenly in order to make the metal hard. This also makes the metal brittle or easy to break. Tempering It is a process in which a hardened metal is heated to a spec c temperature and then cooled slowly in order to make the metal tough enough for use as cutting or abrading tool. Tools such as drills, chisels, hles etc. are hardened and tempered. Galvanisation It is a process in which a protective zinc coating is


  25. Soldering It is a process similar to brazing but the filler material is of much lower melting point. The hller material, solder is an alloy of tin and lead lemperature range for soldering is below 450 C. Soldered joints are the weakest of the three viz welding, brazing and soldering Electroplating It is process in electric current is used to deposit ions of a metal on another. Thus chromium may be used to plate iron bars Electroplating is usually done to prevent corrosion of the base metal or for decorative purpose Smelting lt is a process of extracting a metal from its