Discovery & Inventions - Online Test

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


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Question : 1

The American astronomer 'Clyde William Tombaugh' discovered the dwarf planet 'Pluto' in which of the following years?

Options :
  •  1920
  •  1930
  •  1940
  •  1950