General Knowledge MCQs – Practice Test 2 (Chapter 14)
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MCQ 6: Integrated circuit was created by two engineers working separately in
MCQ 7: Atomic bomb was first successfully developed by
MCQ 8: Frequency modulation radio 'FM' was invented by
MCQ 9: Nancy Johnson invented hand-cranked ice cream churn in
MCQ 10: Printing Press' was invented in
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