Discovery & Inventions - Online Test

Total Number of Questions in this Test: 10
Total Number of Questions Answered: 0
Total Number of Questions Skipped: 0


Time left:
 
Question : 1

Which person is the inventor of the safety Elevator?

Options :
  •  J. L. Baird
  •  Thomas Alva Edison
  •  E. G. Otis
  •  Michael Faraday