Inventions Who invented the BALLPOINT PEN? Biro Brothers Bicc Brothers Waterman Brothers Write Brothers Biro Brothers Bicc Brothers Waterman Brothers Write Brothers ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bifocal Lens? Alfred B. Nobel Rudolf Diesel Benjamin Franklin Thomas Alva Edison Alfred B. Nobel Rudolf Diesel Benjamin Franklin Thomas Alva Edison ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the toothbrush invented? 1765 1770 1790 1742 1765 1770 1790 1742 ANSWER DOWNLOAD EXAMIANS APP
Inventions The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project? Robert Oppenheimer Leslie R. Groves James B. Conant Vannevar Bush Robert Oppenheimer Leslie R. Groves James B. Conant Vannevar Bush ANSWER DOWNLOAD EXAMIANS APP
Inventions What charge card, developed in 1950, was the first to be accepted nationally in the US? MasterCharge Visa Discover Diner's Club MasterCharge Visa Discover Diner's Club ANSWER DOWNLOAD EXAMIANS APP
Inventions What device for new parents did Ann Moore invent in 1969? Disposable diaper Infant carrier Baby monitor Bottle warmer Disposable diaper Infant carrier Baby monitor Bottle warmer ANSWER DOWNLOAD EXAMIANS APP
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