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Inventions

Inventions
What invention caused many deaths while testing it?

Parachute
Ladders
Dynamite
Race cars

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Inventions
What treat was invented by 11-year-old Frank Epperson in 1905?

Banana split
Cotton candy
Cracker Jacks
Popsicle

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Inventions
The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project?

Leslie R. Groves
Robert Oppenheimer
Vannevar Bush
James B. Conant

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Inventions
Which of the following was first patented by an Australian in 1889?

Electric Heater
Electric Drill
Electric Fence
Electric Shaver

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Inventions
Who synthesized the first wholly artificial gene?

J.J. Thompson
Benjamin Franklin
Hargobind Khorana
Meghnad Saha

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Inventions
When were blue jeans invented?

1870s
1850s
1900s
1860s

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