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- Question
Revolving Door was invented by ________.
Options- A. Lucien Vidi
- B. John Venn
- C. Theophilus Van Kannel
- D. Lewis Urry
- Correct Answer
- Theophilus Van Kannel
- 1. Who invented Aerosol can?
Options- A. Erik Rotheim
- B. Erik Mathew
- C. Erik Tim
- D. Eric Flayer Discuss
- 2. Who discovered benzene?
Options- A. Hal Anger
- B. Michael Faraday
- C. Bruce Ames
- D. Nicolas Appert Discuss
- 3. Who invented logarithms?
Options- A. Eden Snowden
- B. Larry Page
- C. Thomas Edison
- D. John Napier Discuss
- 4. Who invented the vacuum pump?
Options- A. Otto von Guericke
- B. Cai Lun
- C. Melitta Bentz
- D. William Henry Fox Talbot Discuss
- 5. Who invented bluetooth?
Options- A. Kirkpatrick Macmillan
- B. Benjamin Franklin
- C. Dr. Jaap Haartsen
- D. Charles Babbage Discuss
- 6. Sewing machine was invented by
Options- A. Alfred P. Southwick
- B. Isaac Singer
- C. Murasaki Shikibu
- D. Hanaoka Seishu Discuss
- 7. Who invented Helicopter?
Options- A. Copernicus
- B. Sikorsky
- C. Cockrell
- D. Drinker Discuss
- 8. Piano was invented by ________.
Options- A. John Barber
- B. Sir Henry Cole
- C. Josephine Cochrane
- D. Bartolomeo Cristofori Discuss
- 9. Christmas Card was invented by ________.
Options- A. John Barber
- B. Josephine Cochrane
- C. Sir Henry Cole
- D. Bartolomeo Cristofori Discuss
- 10. Blood Circulation was discovered by?
Options- A. Mary Anderson
- B. Virginia Apgar
- C. William Harvey
- D. Robert Feulgen Discuss
Inventions problems
Search Results
Correct Answer: Erik Rotheim
Correct Answer: Michael Faraday
Correct Answer: John Napier
Correct Answer: Otto von Guericke
Correct Answer: Dr. Jaap Haartsen
Correct Answer: Isaac Singer
Correct Answer: Sikorsky
Correct Answer: Bartolomeo Cristofori
Correct Answer: Sir Henry Cole
Correct Answer: William Harvey
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