No student devices needed. Know more
8 questions
Who invented the BALLPOINT PEN?
Biro Brothers
Waterman Brothers
Bicc Brothers
Write Brothers
Which scientist discovered the radioactive element radium?
Isaac Newton
Albert Einstein
Benjamin Franklin
Marie Curie
What Galileo invented?
Barometer
Pendulum clock
Microscope
Thermometer
What James Watt invented?
Diving bell
Steam boat
Hot air balloon
Rotary steam engine
What Benjamin Franklin invented?
Bifocal spectacles
Radio
Barometer
Hygrometer
Who invented Internal Combustion Engine?
Roger Bacon
Karl Benz
Dr. Alan M. Turing
OTTO
What invention caused many deaths while testing it?
Dynamite
Ladders
Race cars
Parachute
In which decade was the first solid state integrated circuit demonstrated?
1950s
1960S
1970S
1980S
Explore all questions with a free account