physics questions
DIRECTIONS : Questions based on Physics.
16. What is the main constituent of coal gas?
  A.  Oxygen
  B.  Water
  C.  Nitrogen
  D.  Methane
17. Recoil of a gun is an example of
  A.  Conservation of mass
  B.  conservation of energy
  C.  conservationofPE into KE
  D.  conservation of linear momentum

18. What is the heaviest of the naturally occuring Noble gases?
  A.  Radon
  B.  Xenon
  C.  Helium
  D.  Argon
19. Aviation fuel for Jet aeroplanes consists of purified
  A.  Petrol
  B.  Kerosene
  C.  Gasoline
  D.  Diesel
20. A piece of stone and or iron traveling through space that moves through the earth’s atmosphere is
  A.  Planet
  B.  Sun
  C.  Moon
  D.  Meteor
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