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General Knowledge on Inventions | GK Test on Inventions Page 30
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Inventions

General Knowledge on Inventions

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)

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291. Who invented Dynamite?
292. Ralph Samuelson was only 18 when he invented this sporting item in 1922. What was that?
293. What African-American inventor received 5 patents in the field of shoemaking?
294. What James Watt invented?
295. When was barb wire patented?
296. What Galileo invented?
297. When were blue jeans invented?
298. Which scientist discovered the radioactive element radium?
299. What piece of clothing was invented by French fashion designer Louis Reard in 1946?
300. 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.

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