Inventions What Enrico Fermi invented? X ray machine Nuclear reactor Betatron Cyclotron X ray machine Nuclear reactor Betatron Cyclotron ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Dynamite? Sir Alexander Graham Bell Thomas Alva Edison Alfred B. Nobel Benjamin Franklin Sir Alexander Graham Bell Thomas Alva Edison Alfred B. Nobel Benjamin Franklin ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the toothbrush invented? 1742 1765 1770 1790 1742 1765 1770 1790 ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the first elevator built? 1785 1739 1743 1760 1785 1739 1743 1760 ANSWER DOWNLOAD EXAMIANS APP
Inventions What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes? Charles Richter Joshua Rumble Giuseppe Mercalli Hiram Walker Charles Richter Joshua Rumble Giuseppe Mercalli Hiram Walker ANSWER DOWNLOAD EXAMIANS APP
Inventions FROZEN FOOD - Who discovered the first practical method of freezing food? G. Findus R. Scott C. Birdsey F. Rozenosh G. Findus R. Scott C. Birdsey F. Rozenosh ANSWER DOWNLOAD EXAMIANS APP
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