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Inventions and Discoveries

General Knowledge
1. Television was invented by
 
  • A. Sholes
  • B. J.L.Baird
  • C. Shockley
  • D. John Napier
 
2. Electrons were discovered by
 
  • A. Newton
  • B. Roentgen
  • C. J.J.Thompson
  • D. Edison
 
 
3. Air conditioner was discovered by
 
  • A. Edison
  • B. Wilson
  • C. Carrier
  • D. Roentgen
 
4. Roentgen discovered
 
  • A. Electrocardiograph
  • B. X–rays
  • C. Anti polio vaccine
  • D. Encephalograph
 
5. Who invented logarithms?
 
  • A. Mandeleef
  • B. Shockley
  • C. Amundson
  • D. John Napier