Which one of the following was to be discovered first in the chromosphere of the sun
Answer: B
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What J. B. Dunlop invented?
Answer: A
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Until Victorian times, chocolate was thought of as a drink. When did the first chocolate bar appear?
Answer: D
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Telegraph Code was invented by-
Answer: D
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Mobile Phone invented in which year ?
Answer: B
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Earth inductor compass is
Answer: C
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What now-ubiquitous device was invented by Zenith engineer Eugene Polley in 1955?
Answer: B
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Landstrom invented
Answer: C
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When was the toothbrush invented?
Answer: A
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What famous scientist and inventor participated in the invention of the Aqua-Lung?
Answer: C
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