Dynamite
Answer: B
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Playing cards was invented in 9th century in
Answer: A
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Elevator
Answer: A
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Who Invented Traffic Signal ?
Answer: D
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Bicycle was invented by
Answer: B
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Safety matches was invented by
Answer: C
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Periscope was invented in 1902 by
Answer: C
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Vulcanised rubber was invented by
Answer: C
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Olympic sport Volleyball invented sport in 1895 by
Answer: B
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The cause of Beri Beri was discovered by
Answer: B
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