Optical disc storage 'DVD' was invented and developed by
Answer: D
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Blood Circulation was discovered by
Answer: A
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The system for writing by blind people was invented by
Answer: B
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Helicopter was invented by
Answer: B
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What toy was invented by Joshua Lionel Cowen around 1900?
Answer: C
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Polio Vaccine invented by ?
Answer: B
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Who invented fuel cells in 1839?
Answer: B
Fuel cells were invented in 1839 by Sir William Grove.
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Toricelli invented
Answer: A
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The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name?
Answer: B
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What drink was invented by Charles Leiper Grigg in 1929?
Answer: A
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