Inventions Practice Test 99
helium Quiz PDF: Questions and Answers - 99
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The helium Trivia Questions and Answers PDF (helium Quiz Answers PDF e-Book) download Test 99 to learn inventions online courses. Practice Inventions and Inventors MCQ questions, helium Multiple Choice Questions (MCQ) for online college degrees. The helium Quiz App: Download free certification app for tungsten wire, analytical plotter, clarinet, calculators, helium test prep for online study.
The Quiz: In which one of following year, helium extract process from natural gas was invented; "helium" App (iOS, Android) with answers: 1940; 1915; 1910; 1950; for free online classes. Study inventions and inventors questions and answers, Apple e-Book to download free sample for distance learning classes.
helium Questions and Answers PDF Download: Quiz 99
In which one of the following year, the helium extract process from natural gas was invented?
- 1915
- 1940
- 1910
- 1950
In which country the first mechanical calculator was invented?
- U.S.A
- Canada
- Italy
- China
In which one of the following year, a Clarinet was patented?
- 1689
- 1602
- 1612
- 1690
In which one of the following year, 3 D map-making system was introduced?
- 1923
- 1933
- 1910
- 1957
In which one of the following year, Tungsten Wire was invented?
- 1901
- 1923
- 1906
- 1989
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