Inventions What Enrico Fermi invented? Betatron X ray machine Cyclotron Nuclear reactor Betatron X ray machine Cyclotron Nuclear reactor ANSWER DOWNLOAD EXAMIANS APP
Inventions Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that? Hang glider Golf tee Motorboat Water skis Hang glider Golf tee Motorboat Water skis ANSWER DOWNLOAD EXAMIANS APP
Inventions What toy was invented by Joshua Lionel Cowen around 1900? Electric train Raggedy Ann doll Yo-yo Tinkertoys Electric train Raggedy Ann doll Yo-yo Tinkertoys ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1800s 1880s 1900s 1890s 1800s 1880s 1900s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the telegraph invented? 1890s 1870s 1810s 1840s 1890s 1870s 1810s 1840s ANSWER DOWNLOAD EXAMIANS APP
Inventions FROZEN FOOD - Who discovered the first practical method of freezing food? G. Findus R. Scott F. Rozenosh C. Birdsey G. Findus R. Scott F. Rozenosh C. Birdsey ANSWER DOWNLOAD EXAMIANS APP
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