Inventions Section - 1 Multiple Questions and Answers.




21.When was Monopoly created?
A. 1940s
B. 1930s
C. 1920s
D. 1950s

22.What furniture item was invented by California furniture designer Charles Prior Hall in 1968?
A. Sofa bed
B. Captain's chair
C. Waterbed
D. Hammock

23. 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 Pr
A. Robert Oppenheimer
B. Leslie R. Groves
C. James B. Conant
D. Vannevar Bush

24.When was the first lawn mower invented?
A. 1830
B. 1854
C. 1835
D. 1849

25. In which decade were the first successful diode and triode vacuum tubes invented?
A. 1800s
B. 1880s
C. 1890s
D. 1900s

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