1.	Who invented the BALLPOINT PEN?
	A. Biro Brothers B. Waterman Brothers C. Bicc Brothers D. Write Brothers Discuss in Forum

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2.	In which decade was the first solid state integrated circuit demonstrated?
	A. 1950s B. 1960s C. 1970s D. 1980s  Discuss in Forum

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3.	What J. B. Dunlop invented?
	A. Pneumatic rubber tire B. Automobile wheel rim C. Rubber boot D. Model airplanes Discuss in Forum

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4.	Which scientist discovered the radioactive element radium?
	A. Isaac Newton B. Albert Einstein C. Benjamin Franklin D. Marie Curie Discuss in Forum

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5.	When was barb wire patented?
	A. 1874 B. 1840 C. 1895 D. 1900 Discuss in Forum

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6.	What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?
	A. Charles Richter B. Hiram Walker C. Giuseppe Mercalli D. Joshua Rumble Discuss in Forum

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7.	What Galileo invented?
	A. Barometer B. Pendulum clock C. Microscope D. Thermometer Discuss in Forum

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8.	This statesman, politican, scholar, inventor, and one of early presidents of USA invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel.
	A. George Washington B. Alexander Hamilton C. John Adams D. Thomas Jefferson