Who was the first American female to patent her invention, a method of weaving straw with silk?
A. Marjorie Joyner
B. Margaret Knight
C. Amanda Jones
D. Mary Kies
Answer: Option D
A. Marjorie Joyner
B. Margaret Knight
C. Amanda Jones
D. Mary Kies
Answer: Option D
Who invented the ballpoint pen?
A. Biro Brothers
B. Waterman Brothers
C. Bicc Brothers
D. Write Brothers
In which decade was the first solid state integrated circuit demonstrated?
A. 1950s
B. 1960s
C. 1970s
D. 1980s
A. Pneumatic rubber tire
B. Automobile wheel rim
C. Rubber boot
D. Model airplanes
Which scientist discovered the radioactive element radium?
A. Isaac Newton
B. Albert Einstein
C. Benjamin Franklin
D. Marie Curie
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