Inventions What African-American inventor received 5 patents in the field of shoemaking? Jan Ernst Matzeliger Elijah McCoy Ernest Just Lewis Latimer Jan Ernst Matzeliger Elijah McCoy Ernest Just Lewis Latimer ANSWER DOWNLOAD EXAMIANS APP
Inventions What Benjamin Franklin invented? Radio Barometer Hygrometer Bifocal spectacles Radio Barometer Hygrometer Bifocal spectacles ANSWER DOWNLOAD EXAMIANS APP
Inventions When were bar code scanners invented? 1970s 1960s 1950s 1940s 1970s 1960s 1950s 1940s ANSWER DOWNLOAD EXAMIANS APP
Inventions Who synthesized the first wholly artificial gene? Hargobind Khorana J.J. Thompson Benjamin Franklin Meghnad Saha Hargobind Khorana J.J. Thompson Benjamin Franklin Meghnad Saha ANSWER DOWNLOAD EXAMIANS APP
Inventions What Frank Whittle invented? Radar Ethyl gasoline Sonar Jet propulsion Radar Ethyl gasoline Sonar Jet propulsion ANSWER DOWNLOAD EXAMIANS APP
Inventions Where is the village of Branston, after which the famous pickle is named? Lancashire Yorkshire Staffordshire Norfolk Lancashire Yorkshire Staffordshire Norfolk ANSWER DOWNLOAD EXAMIANS APP
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