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This is a timed quiz. You will be given 15 seconds per question. Are you ready?
15
Who invented the BALLPOINT PEN?
Correct!
Wrong!
What J. B. Dunlop invented?
Correct!
Wrong!
What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?
Correct!
Wrong!
What Galileo invented?
Correct!
Wrong!
Which scientist discovered the radioactive element radium?
Correct!
Wrong!
When was barb wire patented:
Correct!
Wrong!
In which decade was the first solid state integrated circuit demonstrated?
Correct!
Wrong!
The spiral flow in a stream caused by channel shape is called:
Correct!
Wrong!
General Knowledge Quiz 21
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