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TNPSC Chemistry Model Question Papers

General Science
1. Which one among the following is used as a moderator in nuclear reactors?
 
  • A. Ozone
  • B. Heavy hydrogen
  • C. Heavy water
  • D. Hydrogen peroxide
Answer: C.
Heavy water
 
2. Who discovered radioactivity?
 
  • A. Henri Becquerel
  • B. Marie Curie
  • C. Roentgen
  • D. John Dalton
Answer: A.
Henri Becquerel
 
 
3. Which one of the following is used in vulcanisation of rubber?
 
  • A. Carbon
  • B. Hydrogen
  • C. Sulphur
  • D. Phosphorous
Answer: C.
Sulphur
 
4. Dynamite was invented by
 
  • A. Bell
  • B. Nobel
  • C. Fleming
  • D. Edison
Answer: B.
Nobel