General Knowledge
DISCOVERIES AND INVENTIONS MCQs
Scientists, Inventions & Discoveries
Total Questions : 949
| Page 3 of 95 pages
Answer: Option D. -> 1900s
Answer: Option C. -> George Gamow
Answer: Option C. -> Ouija board
Answer: Option A. -> Lewis Edson Waterman
Answer: Option D. -> Diner's Club
Answer: Option A. -> Electric Drill
Answer: Option B. -> Edward Jenner