Inventions Practice Test 129
Radio Quiz PDF: Questions and Answers - 129
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The MCQ Quiz: Radio signals were first time sent and received in; "Radio" App Download (Android & iOS) Free with answers 1879, 1888, 1895 and 1847 for distance learning. Study inventions and inventors questions and answers, Apple Book to download free sample for taking online classes.
Radio Questions and Answers PDF Download: Quiz 129
MCQ 641: Radio signals were first time sent and received in
- 1888
- 1879
- 1895
- 1847
MCQ 642: The first inactive tetanus oxide was discovered in
- 1976
- 1903
- 1924
- 1942
MCQ 643: Pointing Stick was invented by IBM computer scientist named as
- Sir John Biggins
- Sir Alexander Cartwright
- Sir Stephen Poplawski
- Sir Ted Selker
MCQ 644: Periodic table was patented by a Russian Chemist named as
- Dmitri Mendeleev
- Sir Henry W. Seelay
- Sir Schuyler Skaats Wheeler
- Sir Samuel W. Francis
MCQ 645: Concrete was discovered by
- Sir Willem Kloff
- Sir Joseph Monier
- Sir George Smith
- Sir Willard Boyle
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