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Inventions

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

1890s
1900s
1880s
1800s

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Inventions
Which insurance salesman invented the fountain pen in 1884?

Charles Kettering
Sir William Grove
Lewis Edson Waterman
George Fountain

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Inventions
Who came up with the idea for INSTANT MASHED POTATO?

K. Edwards
E. Asselbergs
W. Raleigh
S. Tuberosum

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Inventions
What invention caused many deaths while testing it?

Ladders
Parachute
Dynamite
Race cars

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Inventions
What 'game' was first produced by the Southern Novelty Company in Baltimore, Maryland in 1892?

Ouija board
Monopoly
Ping Pong
Frisbee

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Inventions
Who invented Jet Engine?

Gottlieb Daimler
Sir Frank Whittle
Lewis E. Waterman
Roger Bacon

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