Inventions Who invented Bakelite? Henry Ford Charles Goodyear Leo Hendrik Baekeland Roy Plunkett Henry Ford Charles Goodyear Leo Hendrik Baekeland Roy Plunkett ANSWER DOWNLOAD EXAMIANS APP
Inventions What groovy item was invented by Englishman Edward Craven Walker in 1963? Eight-track tape deck Hot comb Lava lamp Leisure suit Eight-track tape deck Hot comb Lava lamp Leisure suit 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 Water skis Motorboat Hang glider Golf tee Water skis Motorboat ANSWER DOWNLOAD EXAMIANS APP
Inventions What Benjamin Franklin invented? Bifocal spectacles Barometer Hygrometer Radio Bifocal spectacles Barometer Hygrometer Radio ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1880s 1890s 1900s 1800s 1880s 1890s 1900s 1800s ANSWER DOWNLOAD EXAMIANS APP
Inventions What J. B. Dunlop invented? Automobile wheel rim Model airplanes Rubber boot Pneumatic rubber tire Automobile wheel rim Model airplanes Rubber boot Pneumatic rubber tire ANSWER DOWNLOAD EXAMIANS APP
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