Inventions Practice Test 73
WD-40 Quiz Questions and Answers PDF - 73
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The Book WD-40 Quiz Questions and Answers, wd-40 MCQ PDF Download, e-Book Test 73 to learn free inventions online courses. Practice Inventions and Inventors trivia questions, wd-40 Multiple Choice Questions (MCQ) for online college degrees. The WD-40 Quiz App Download: Free learning app for digital camera, modern-day design helicopter, christmas lights, electron tubes, wd-40 test prep for online elementary school classes.
The Quiz: WD-40 was patented by; "WD-40" App Download (Free) with answers sir john fitch, sir nikolaus otto, sir john barber and sir norn larsen for online certificate courses. Solve inventions and inventors questions and answers, Amazon eBook to download free sample for distance learning.
WD-40 Questions and Answers PDF Download: Quiz 73
MCQ 361: WD-40 was patented by
- Sir Nikolaus Otto
- Sir John Fitch
- Sir John Barber
- Sir Norn Larsen
MCQ 362: Electron tubes were invented by
- Sir Henry W. Seelay
- Sir Schuyler Skaats Wheeler
- Sir Samuel W. Francis
- Sir John Ambrose
MCQ 363: The first Christmas lights were lit by the use of electricity in
- 1877
- 1882
- 1851
- 1862
MCQ 364: In which one of the following dates World first practical helicopter took flight?
- 1888
- 1939
- 1760
- 1952
MCQ 365: The first self-contained digital camera was invented in
- 1975
- 1989
- 1999
- 1956
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