Inventions Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear? 1828 There is no sure date 1825 1831 1828 There is no sure date 1825 1831 ANSWER DOWNLOAD EXAMIANS APP
Inventions What Enrico Fermi invented? Betatron Cyclotron X ray machine Nuclear reactor Betatron Cyclotron X ray machine Nuclear reactor ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Bakelite? Charles Goodyear Henry Ford Leo Hendrik Baekeland Roy Plunkett Charles Goodyear Henry Ford Leo Hendrik Baekeland Roy Plunkett ANSWER DOWNLOAD EXAMIANS APP
Inventions For what does the world owe Almon Strowger a debt of gratitude? Vending Machines Traffic Lights Automatic Telephone Exchanges Parking Meters Vending Machines Traffic Lights Automatic Telephone Exchanges Parking Meters ANSWER DOWNLOAD EXAMIANS APP
Inventions What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955? Calculator VCR Microwave oven Remote control Calculator VCR Microwave oven Remote control ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1880s 1800s 1900s 1890s 1880s 1800s 1900s 1890s ANSWER DOWNLOAD EXAMIANS APP
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