Chapter 14: General Knowledge Exam Tests
General Knowledge MCQs - Chapter 14
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MCQ : Electronic instrument which is used to measure alkalinity or acidity of a liquid was invented by
MCQ 1: Telephone is invented by
MCQ 2: John Froelich invented first gasoline-powered tractor in
MCQ 3: DuPont Corporation invented first acrylic fiber in
MCQ 4: Who proposed the 'Kite' experiment
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