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Inventions

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

1800s
1880s
1900s
1890s

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Inventions
Who invented Dynamite?

Thomas Alva Edison
Alfred B. Nobel
Benjamin Franklin
Sir Alexander Graham Bell

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Inventions
Who invented Fountain Pen?

Lewis E. Waterman
Kirkpatrick Macmillan
Sir Frank Whittle
John J. Loud

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Inventions
Who invented Jet Engine?

Gottlieb Daimler
Lewis E. Waterman
Roger Bacon
Sir Frank Whittle

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Inventions
When was the toothbrush invented?

1742
1790
1765
1770

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Inventions
This part-time race car driver invented the bucket seat in 1969. Who was he??

Steve McQueen
Harrison Frazier
John Wayne
Paul Newman

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