Inventions Practice Test 58
Slot Machines Quiz Questions and Answers PDF - 58
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The Quiz: In which one of the following year, mechanical slot machines were patented; "Slot Machines" App Download (Free) with answers 1895, 1874, 1806 and 1844 for online courses. Solve inventions and inventors questions and answers, Amazon eBook to download free sample for distance learning.
Slot Machines Questions and Answers PDF Download: Quiz 58
MCQ 286: In which one of the following year, mechanical slot machines were patented?
- 1874
- 1895
- 1806
- 1844
MCQ 287: Bunsen burners were patented by
- Sir Walter E.Diemer
- Sir Robert Bunsen
- Sir Willem Kloff
- Sir John Biggins
MCQ 288: Dental braces were invented in
- 1728
- 1723
- 1788
- 1734
MCQ 289: Tranquilizer gun was invented by a New Zealand veterinarian named as
- Sarah Boone
- Sir Colin Albert Murdoch
- John Loudon McAdam
- Dr Raymond Lemieux
MCQ 290: The first petrol engine was invented by a German engineer named as
- Sir Nickolaus August Otto
- Sir Jack Kilby
- Sir Robert Noyce
- Sir Paul Cornu
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