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Inventions

Inventions
Who invented Bakelite?

Charles Goodyear
Roy Plunkett
Henry Ford
Leo Hendrik Baekeland

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Inventions
What furniture item was invented by California furniture designer Charles Prior Hall in 1968?

Hammock
Sofa bed
Captain's chair
Waterbed

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Inventions
What Frank Whittle invented?

Ethyl gasoline
Radar
Sonar
Jet propulsion

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Inventions
In which decade were the first successful diode and triode vacuum tubes invented?

1890s
1800s
1900s
1880s

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Inventions
What Sir Isaac Newton invented?

Microscope
Reflecting telescope
Spectacles
Chronometer

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Inventions
When was the first elevator built?

1739
1743
1785
1760

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