Inventions MCQs – Certification Test 520

Phonograph Quiz (Question 520) – Learning App & e-Book Download

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Download Phonograph e-Book (Google Books)

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MCQ 520: The phonograph was invented by an American inventor and businessman named as:

Sir J.Stuart Blackton
Sir Thomas Edison
Sir William George Horner
Sir Percy Spencer

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Inventions Quiz App & e-Book – Phonograph Study Material

Free Phonograph Learning App – Download for iOS & Android

Download the Phonograph Quiz App: Study Phonograph Notes, General Knowledge Quiz App, and Basic Control Systems Quiz App for invention digital educational participation.

Free "Phonograph Learning" App: Download the General Knowledge Quiz App (iOS & Android) for world inventions studies. Download Play Store & App Store Learning Apps with all functionalities to pursue invention remote education.