Sun, 19 Sep
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Important Facts

  • Pyrite/IronDisulphide/FeS2 called as Fool's Gold.
  • Gun metal or red brass is an alloy of cooper (88%), tin(2-4%) and zinc (8-10%)
  • Brass is an alloy of copper and zinc
  • White gold is an alloy of pure gold and white metals (nickel/silver/palladium).
  • LPG (Liquefied petroleum gas) has main constituents of methane, butane, and propane.
  • Sea water has 3.5% of salinity means that for every 1 litre of sea water there will be 35 grams of dissolved salt.
  • The Haber/Haber-Bosch process is main industrial process for producing ammonia.
  • Pearl is composed of calcium carbonate in minute crystalline form
  • Carbamide is another name of Urea, an organic compound with chemical formula CO(NH2)2.
  • Nitrobenzene (C6H5NO2) as oil of mirbane, used as an inexpensive perfume for cosmetics which is too toxic.
  • Hydrogen is the most abundant element in the Universe (2-helium, 3-oxygen and 4-carbon).
  • Oxalic acid condensed formula is HOOCCOOH.
  • Polyvinyl chloride (PVC) is the world's third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene.
  • Biogas is produced from cow dung, so called as Gobar gas and it contains 55-70% of methane which is inflammable.
  • Acid rain is result of air pollution, it contains majorly nitrous oxide and sulphur dioxide.
  • Hydrogen is an essential constituent of acids.
  • Nitrous oxide(N2O), commonly known as laughing gas.
  • Methyl isocyanate gas was leaked at Bhopal during the Bhopal gas tragedy at 2-3 December 1984.
  • Oxidation is loss of electrons and Reduction is gain of electrons.
  • Water at 4°C has maximum density.
  • Carbon dioxide plays major role in the problem of greenhouse effect.

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