Inventions Who invented Gunpowder? Roger Bacon Sir Frank Whittle Leo H Baekeland G. Ferdinand Von Zeppelin Roger Bacon Sir Frank Whittle Leo H Baekeland G. Ferdinand Von Zeppelin ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the first solid state integrated circuit demonstrated? 1980s 1950s 1960s 1970s 1980s 1950s 1960s 1970s ANSWER DOWNLOAD EXAMIANS APP
Inventions What Benjamin Franklin invented? Radio Hygrometer Bifocal spectacles Barometer Radio Hygrometer Bifocal spectacles Barometer ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first Lionel trains manufactured? 1901 1944 1920 1890 1901 1944 1920 1890 ANSWER DOWNLOAD EXAMIANS APP
Inventions For what is Charles Babbage (1792-1871) remembered? Telescopes Steam Boating Radio-Telegraphy Computers Telescopes Steam Boating Radio-Telegraphy Computers ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the first controllable flying AEROPLANE (AIRPLANE)? South Brothers Lidenbergh Brothers West Brothers Wright Brothers South Brothers Lidenbergh Brothers West Brothers Wright Brothers ANSWER DOWNLOAD EXAMIANS APP
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