Who discovered Insulin
Answer: D
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Radio valve was invented by
Answer: B
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Electronic Computer was invented by-
Answer: D
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James Chadwick discovered
Answer: B
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What Frank Whittle invented?
Answer: D
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When was the first Lionel trains manufactured?
Answer: C
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Who invented Jet Engine?
Answer: A
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The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project?
Answer: A
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Integrated circuit was co-crated in
Answer: B
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Lift was invented by
Answer: C
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