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Inventions

Inventions
In which decade was the Internet first implemented?

1980s
1950s
1940s
1960s

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Inventions
What Frank Whittle invented?

Jet propulsion
Ethyl gasoline
Sonar
Radar

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Inventions
Which scientist discovered the radioactive element radium?

Albert Einstein
Marie Curie
Benjamin Franklin
Isaac Newton

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Inventions
Who synthesized the first wholly artificial gene?

Benjamin Franklin
Hargobind Khorana
Meghnad Saha
J.J. Thompson

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Inventions
When was barb wire patented?

1895
1900
1840
1874

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Inventions
When was the first lawn mower invented?

1830
1849
1835
1854

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