General Science Gk Questions

DIRECTIONS : Objective Question on General Science.
56. Which one of the following is used for dating archaeological specimens in words, bones and shells?
  A.  Uranium 238
  B.  Argon isotope
  C.  Carbon 14
  D.  Strontium 90
57. What is condensation?
  A.  Change of gas into solid
  B.  Change of solid into liquid
  C.  Change of heat energy into cooling energy
  D.  Change of vapour into liquid
58. Which of the following are the ingredients of gun metal?
  A.  Iron, tin
  B.  Copper, tin
  C.  Iron, brass, tin
  D.  Iron, zinc, titanium
59. The inert gas which is substituted for nitrogen in the air, used by deep sea drivers for breathing, is
  A.  Argon
  B.  Xenon
  C.  Helium
  D.  Krypton
60. Actinides are the elements with atomic numbers from
  A.  36 to 43
  B.  89 to 103
  C.  97 to 114
  D.  101 to 115
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