General Science Facts P-1

  • The device that is used to determine the depth of the sea is SONAR.
  • In a dry cell, the positive electrode is carbon.
  • The colour which deviates maximum during the dispersion is violet.
  • The colour has the longest wavelength is red.
  • The process responsible for the enormous energy in the sun is nuclear fusion.
  • Air is neither an element nor a compound.
  • During change of state, the temperature remains constant.
  • The weight of an object would be zero when it is placed at the centre of the earth.
  • We cannot see during a fog because of internal reflection.
  • Substitute of U-235 as nuclear fuel is Plutonium-239.
  • The door of an operating refrigerator in a room is kept open, the room will become warmer.
  • If the humidity of air increases, the velocity of sound increases.
  • The colour of star is an indication of its temperature.
  • An astronaut in an earth satellite will observe the sky is black.
  • The full shape of a rainbow is Parabola.

 

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