Inventions Quizzes
Inventions Practice Test 38
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The MCQs: Which one of the following developed the most important landscaping tool named as string trimmer; "String Trimmer" App Download (iOS & Android) with answers sir raymond damadian, sir stephen poplawski, sir george ballas and sir stephen poplawski for school certificate. Practice inventions and inventors questions and answers, Google eBook to download free sample for online school courses.
MCQ 186: Which one of the following developed the most important landscaping tool named as string trimmer?
MCQ 187: Radio was devised by an Italian inventor named as?
MCQ 188: In which one of the following year, Ac radio tube was invented?
MCQ 189: In which one of the following year, spark plug was patented?
MCQ 190: In which one of the following year, the X ray machine was invented?
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