Inventions Who invented the BALLPOINT PEN? Write Brothers Waterman Brothers Biro Brothers Bicc Brothers Write Brothers Waterman Brothers Biro Brothers Bicc Brothers ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the first solid state integrated circuit demonstrated? 1980s 1970s 1960s 1950s 1980s 1970s 1960s 1950s ANSWER DOWNLOAD EXAMIANS APP
Inventions What J. B. Dunlop invented? Rubber boot Model airplanes Pneumatic rubber tire Automobile wheel rim Rubber boot Model airplanes Pneumatic rubber tire Automobile wheel rim ANSWER DOWNLOAD EXAMIANS APP
Inventions Which scientist discovered the radioactive element radium? Isaac Newton Albert Einstein Benjamin Franklin Marie Curie Isaac Newton Albert Einstein Benjamin Franklin Marie Curie ANSWER DOWNLOAD EXAMIANS APP
Inventions When was barb wire patented? 1895 1900 1840 1874 1895 1900 1840 1874 ANSWER DOWNLOAD EXAMIANS APP
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