Inventions Who invented Gunpowder? Leo H Baekeland G. Ferdinand Von Zeppelin Sir Frank Whittle Roger Bacon Leo H Baekeland G. Ferdinand Von Zeppelin Sir Frank Whittle Roger Bacon ANSWER DOWNLOAD EXAMIANS APP
Inventions What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent? Electricity Early Warning Television Telephone Electricity Early Warning Television Telephone ANSWER DOWNLOAD EXAMIANS APP
Inventions Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that? Motorboat Water skis Hang glider Golf tee Motorboat Water skis Hang glider Golf tee ANSWER DOWNLOAD EXAMIANS APP
Inventions What Frank Whittle invented? Sonar Radar Ethyl gasoline Jet propulsion Sonar Radar Ethyl gasoline Jet propulsion ANSWER DOWNLOAD EXAMIANS APP
Inventions Which of the following was first patented by an Australian in 1889? Electric Shaver Electric Heater Electric Drill Electric Fence Electric Shaver Electric Heater Electric Drill Electric Fence ANSWER DOWNLOAD EXAMIANS APP
Inventions What invention by Garnet Carter made its debut at the Fairyland Inn Resort in Lookout Mountain, Tennessee, in 1927? Swimming pool slide Golf cart Miniature golf Ski lift Swimming pool slide Golf cart Miniature golf Ski lift ANSWER DOWNLOAD EXAMIANS APP
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