Inventions Quizzes
Inventions Practice Test 98
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The MCQs: Mercury vapor lamp was invented by an American Electrical engineer named as; "Fluorescent Lighting" App (Android, iOS) with answers: Sir Peter Cooper Hewitt; Sir James Hillier; Uno Vilho; Dr Dennis Colonello; for online elementary school classes. Practice inventions and inventors questions and answers, Google eBook to download free sample for online study.
Mercury vapor lamp was invented by an American Electrical engineer named as
Hot air balloon was discovered by the French pioneer named as
In which one of the following year, marquis wheat was patented?
In which one of the following year Penicillin was invented?
Spectrograph was invented by
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