Some Important Common Facts of Chemistry

• Age of fossils and archeological excavation is determined by radioactive carbon (C14).
• Diamond has maximum refractive index and due to total internal reflection. It has lustre.
• Chloroform in sunlight forms poisonous gas 'Phosgene' (COCI2).
• To decrease the basicity of soil gypsum is used.
• In the preparation of Talcon powder theophestal mineral is used.
• Potassium chloride is most suitable for the removal of permanent hardness of water.
• To avoid melting of ice gelatine is used.
• When dry ice is heated it is directly converted in to gas.
• Saccharine is prepared from toluene.
• Cream is a type of milk in which amount of fat is increased while amount of water decrease.
• From one kilogram of honeybee 3500 calorie energy is produced.
• N2O is known as laughing gas.
• Bones contain about 58% calcium phosphate.
• Phosphine gas is used in voyage as Holmes signal.
• Chlorine gas bleaches the colour of flower due to oxidation.
• Red phosphorous is used in match industry.
• Urea contain 46% nitrogen.
• In the electroplating of vessel NH4Cl is used.
• Power alcohol is prepared from mixing pure alcohol in benzene which is used as rocket fuel.
• Artificial perfumes are prepared from Ethyl acetate.
• Urea was the first organic compound synthesised in Laboratory.
• Vinegar contains 10% acetic acid.
• Acetylene is used for light production.
• Ferric chloride is used to stop bleeding.
• Barium is responsible for green colour in fireworks.
• Cesium is used in solar cells.
• Yellow phosphorous is kept in water.
• Sea weeds contains iodine.
• During cooking maximum vitamins is lost.
• For the preparation of silver mirror, glucose is used.
• When cream is separated from milk, it's density increases.
• For artificial respiration mixture of oxygen and helium gas cylinder is used.
• In cold places, to decrease the freezing point ethylene glycol is used.
• Hydrogen peroxide is used for oil paintings.
• Sodium is kept in kerosene oil.
• The heaviest element is Osmium (Os).
• The lightest element, least dense and most reductant is lithium (Li).
• Flourine is used the most oxidising agent.
• Silver is the best conductor of electricity.
• Radon is the heaviest gas.
• Polonium has the maximum number of isotopes.
• Sulphuric acid is known as oil of vitriol.
• Noble metals - Ag, Au, Pt, Ir, Hg, Pd, Rh, Ru and Os.
• When methyl alcohol (methanol) is taken even in minute quantities, it acts as poison and serves as a cause for blindness.
• Glass makes a soluble silicate in hydrofloric acid (HF). This is the reason why hydrofloric acid is not stored in glass containers.
• The density of gold is higher than the density of mercury. So, gold drowns in mercury.
• Bisphenol A is a chemical used for progress in food packaging maternal.
• Xenon is also called stranger gas.
• If soluble substance is added to a liquid, the surface tension of that liquid is increased.
• Conversion of force nitrogen in atmosphere into nitrates is known as Nitrogen fixation.
• Picric acid is an organic compound which is used as a reagent in Laboratory.
• Bones are composed of 8% of phosphorous.
• Safety matches are made by using red phosphorous.
• Ammonium chloride is used to electroplate utensils.
• Benzene or Ether is dissolved in pure alcohol to form power alcohol, which is used as a fuel for aeroplanes.
• Milk is an emulsion.
• Platinum is also called 'White Gold'.