Inventions When was the first lawn mower invented? 1849 1835 1854 1830 1849 1835 1854 1830 ANSWER DOWNLOAD EXAMIANS APP
Inventions What Enrico Fermi invented? Cyclotron Nuclear reactor Betatron X ray machine Cyclotron Nuclear reactor Betatron X ray machine ANSWER DOWNLOAD EXAMIANS APP
Inventions Who synthesized the first wholly artificial gene? Meghnad Saha Hargobind Khorana Benjamin Franklin J.J. Thompson Meghnad Saha Hargobind Khorana Benjamin Franklin J.J. Thompson ANSWER DOWNLOAD EXAMIANS APP
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? Robert Oppenheimer Leslie R. Groves Vannevar Bush James B. Conant Robert Oppenheimer Leslie R. Groves Vannevar Bush James B. Conant ANSWER DOWNLOAD EXAMIANS APP
Inventions When was barb wire patented? 1874 1840 1895 1900 1874 1840 1895 1900 ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1890s 1800s 1900s 1880s 1890s 1800s 1900s 1880s ANSWER DOWNLOAD EXAMIANS APP
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