Science Facts Set-9

  • Aorta is the largest artery in the human body.
  • Human windpipe (trachea) is about 12 cm long.
  • There are two types of respiration based on the availability of oxygen. They are aerobic respiration and anaerobic respiration.
  • Electronegativity is the relative tendency of an atom in a molecule to attract the shared pair of electrons towards itself.
  • Neurons (nerve cells) are the longest cells. Some neurons are a few meters long!
  • Sulphuric acid is also known as the king of chemicals.
  • The word 'Agriculture' is derived from the Latin word 'Ager Cultura' which means 'Field Cultivation'.
  • William Harvey was the first to discover the circulation of blood.
  • Aluminium is a silvery white metal which has a melting point of 660 degrees centigrade.
  • The lightest known metal is lithium whose atomic number is 3.
                                  Handbook of Lithium and Natural Calcium Chloride                                

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