Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1800s 1890s 1880s 1900s 1800s 1890s 1880s 1900s ANSWER DOWNLOAD EXAMIANS APP
Inventions FROZEN FOOD - Who discovered the first practical method of freezing food? R. Scott F. Rozenosh C. Birdsey G. Findus R. Scott F. Rozenosh C. Birdsey G. Findus ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade was the AEEE (now the IEEE) founded? 1880s 1930s 1850s 1950s 1880s 1930s 1850s 1950s ANSWER DOWNLOAD EXAMIANS APP
Inventions What Frank Whittle invented? Radar Sonar Ethyl gasoline Jet propulsion Radar Sonar Ethyl gasoline Jet propulsion ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bicycle? Karl Benz Kirkpatrick Macmillan Evangelista Torricelli Leo H Baekeland Karl Benz Kirkpatrick Macmillan Evangelista Torricelli Leo H Baekeland ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bakelite? Charles Goodyear Roy Plunkett Henry Ford Leo Hendrik Baekeland Charles Goodyear Roy Plunkett Henry Ford Leo Hendrik Baekeland ANSWER DOWNLOAD EXAMIANS APP
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