Facts

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.