Inventions Which insurance salesman invented the fountain pen in 1884? Sir William Grove George Fountain Lewis Edson Waterman Charles Kettering Sir William Grove George Fountain Lewis Edson Waterman Charles Kettering ANSWER DOWNLOAD EXAMIANS APP
Inventions What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes? Hiram Walker Giuseppe Mercalli Charles Richter Joshua Rumble Hiram Walker Giuseppe Mercalli Charles Richter Joshua Rumble ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1900s 1880s 1890s 1800s 1900s 1880s 1890s 1800s ANSWER DOWNLOAD EXAMIANS APP
Inventions What James Watt invented? Diving bell Rotary steam engine Steam boat Hot air balloon Diving bell Rotary steam engine Steam boat Hot air balloon ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bicycle? Kirkpatrick Macmillan Leo H Baekeland Evangelista Torricelli Karl Benz Kirkpatrick Macmillan Leo H Baekeland Evangelista Torricelli Karl Benz ANSWER DOWNLOAD EXAMIANS APP
Inventions What Karl Benz invented? Gasoline powered automobile Glider Streetcar Steam turbine Gasoline powered automobile Glider Streetcar Steam turbine ANSWER DOWNLOAD EXAMIANS APP
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