This African-American woman physical therapist worked with soldiers disabled in World War II. She invented a device that helped the disabled to eat by delivering food through a tube to a mouthpiece.
Answer: A
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In which decade was the transistor invented?
Answer: A
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William Frederick is credited with the invention of the modern frisbee in the mid 1950's. In 1957 the Wham-O Company bought his idea and the rest is history. They named the toy after William Frisbie w
Answer: A
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Who invented the Seed Drill?
Answer: A
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Microwave oven was invented by
Answer: A
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Device used to determine aircraft direction by using magnetic field is called
Answer: B
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Who Invented Worldwide Standard Time Zones ?
Answer: D
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In which year was Nuclear power first used to produce electricity ?
Answer: A
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First solar cell was invented in 1883 by
Answer: D
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Who amongst the following Won Nobel prize for inventing Vitamin K ?
Answer: B
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