Science General knowledge Questions

33. In which of the following activities silicon carbide is used?
  A.  Disinfecting water of ponds
  B.  Cutting very hard substances
  C.  Making cement and glass
  D.  Making casts for statues
Answer
Ans: B
Cutting very hard substances
34. In an atomic explosion, enormous energy is released which is due to the
  A.  Conversion of mass into energy
  B.  Conversion of mechanical energy into nuclear energy
  C.  Conversion of neutrons into process
  D.  Conversion of chemical energy into heat energy
Answer
Ans: A
Conversion of mass into energy
35. The property of a substance to absorb moisture from the air on exposure is called
  A.  Osmosis
  B.  Dessication
  C.  Deliquescence
  D.  Efflorescence
Answer
Ans: C
Deliquescence
36. Life of RBC in human blood is of
  A.  30 days
  B.  60 days
  C.  120 days
  D.  15 hours
Answer
Ans: C
120 days
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