Inventions Who invented the battery? James Hargreaves John Wilkinson Alessandro Volta Thomas Edison James Hargreaves John Wilkinson Alessandro Volta Thomas Edison ANSWER DOWNLOAD EXAMIANS APP
Inventions When were bar code scanners invented? 1940s 1970s 1960s 1950s 1940s 1970s 1960s 1950s ANSWER DOWNLOAD EXAMIANS APP
Inventions Which scientist discovered the radioactive element radium? Isaac Newton Benjamin Franklin Albert Einstein Marie Curie Isaac Newton Benjamin Franklin Albert Einstein Marie Curie ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Gunpowder? G. Ferdinand Von Zeppelin Roger Bacon Sir Frank Whittle Leo H Baekeland G. Ferdinand Von Zeppelin Roger Bacon Sir Frank Whittle Leo H Baekeland ANSWER DOWNLOAD EXAMIANS APP
Inventions What invention was first installed at a Hartford, Connecticut bank in 1889? Automatic teller machine Time-lock safe Burglar alarm Pay telephone Automatic teller machine Time-lock safe Burglar alarm Pay telephone ANSWER DOWNLOAD EXAMIANS APP
Inventions For what does the world owe Almon Strowger a debt of gratitude? Vending Machines Traffic Lights Parking Meters Automatic Telephone Exchanges Vending Machines Traffic Lights Parking Meters Automatic Telephone Exchanges ANSWER DOWNLOAD EXAMIANS APP
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