Inventions Which scientist discovered the radioactive element radium? Benjamin Franklin Albert Einstein Marie Curie Isaac Newton Benjamin Franklin Albert Einstein Marie Curie Isaac Newton ANSWER DOWNLOAD EXAMIANS APP
Inventions When were bar code scanners invented? 1970s 1950s 1960s 1940s 1970s 1950s 1960s 1940s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Fountain Pen? Kirkpatrick Macmillan John J. Loud Lewis E. Waterman Sir Frank Whittle Kirkpatrick Macmillan John J. Loud Lewis E. Waterman Sir Frank Whittle 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? Vannevar Bush Robert Oppenheimer Leslie R. Groves James B. Conant Vannevar Bush Robert Oppenheimer Leslie R. Groves James B. Conant ANSWER DOWNLOAD EXAMIANS APP
Inventions What treat was invented by 11-year-old Frank Epperson in 1905? Banana split Cotton candy Cracker Jacks Popsicle Banana split Cotton candy Cracker Jacks Popsicle ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bifocal Lens? Rudolf Diesel Alfred B. Nobel Benjamin Franklin Thomas Alva Edison Rudolf Diesel Alfred B. Nobel Benjamin Franklin Thomas Alva Edison ANSWER DOWNLOAD EXAMIANS APP
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