Inventions Practice Test 118
Vaccum Tube Quiz Questions and Answers PDF - 118
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The Quiz: In which year first vacuum tube was invented; "Vaccum Tube" App Download (Free) with answers: 1976; 1904; 1903; 1924; for online certifications. Solve inventions and inventors questions and answers, Amazon eBook to download free sample for online school courses.
Vaccum Tube Questions and Answers PDF Download: Quiz 118
In which year the first vacuum tube was invented?
- 1904
- 1976
- 1903
- 1924
Which one of the following invents AC?
- Sir Willis H.Carrier
- Sir Jack Kilby
- Sir Schuyler Skaats Wheeler
- Sir Walter Brattain
In which one of the following country cheese slicer was invented?
- Spain
- Norway
- America
- Canada
The decimal point notation was introduced by
- Ibn-al Haytham
- Sind ibn Ali
- Muhammad ibn Musa al-Khwazirzmi
- Muhammad ibn Musa
The fire was first controlled by humans anywhere from about
- 210,000 years ago
- 265,000 years ago
- 230,000 years ago
- 310,000 years ago
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