Inventions Practice Test 111
Light Bulb Leds Quiz PDF: Questions and Answers - 111
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The MCQ Quiz: In which one of the following year light bulb led were patented; "Light Bulb Leds" App Download (Android & iOS) Free with answers 1813, 1875, 1892 and 1873 for online certifications. Study inventions and inventors questions and answers, Apple Book to download free sample for online study.
Light Bulb Leds Questions and Answers PDF Download: Quiz 111
MCQ 551: In which one of the following year light bulb led were patented?
- 1875
- 1813
- 1892
- 1873
MCQ 552: Space shuttle was invented by
- Sir Henry W. Seelay
- Sir Schuyler Skaats Wheeler
- Sir Samuel W. Francis
- Sir George A.Mueller
MCQ 553: The transformer was invented by
- Sir Michael Faraday
- Sir George Beers
- Sir T.E Rayan
- Sir James Hillier
MCQ 554: In which one of the following year, Goalie mask was invented?
- 1985
- 1960
- 1945
- 1966
MCQ 555: In which one of the following year, elevator was invented?
- 1896
- 1880
- 1855
- 1823
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