E-PolyLearning

1. Who invented the BALLPOINT PEN?
a. Biro Brothers
b. Waterman Brothers
c. Bicc Brothers
d. Write Brothers
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Answer: (a).Biro Brothers

2. In which decade was the first solid state integrated circuit demonstrated?
a. 1950s
b. 1960s
c. 1970s
d. 1980s
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Answer: (a).1950s

3. What J. B. Dunlop invented?
a. Pneumatic rubber tire
b. Automobile wheel rim
c. Rubber boot
d. Model airplanes
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Answer: (a).Pneumatic rubber tire

4. Which scientist discovered the radioactive element radium?
a. Isaac Newton
b. Albert Einstein
c. Benjamin Franklin
d. Marie Curie
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Answer: (d).Marie Curie

5. When was barb wire patented?
a. 1874
b. 1840
c. 1895
d. 1900
View Answer Report Discuss 50-50!
Answer: (a).1874

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