Class 8 Online Courses

Inventions App's Tests

Inventions e-Book's MCQs - Complete

Loudspeaker App Quiz Download & e-Book - 76

MCQ:

A loudspeaker was discovered by

  1. Sir Gideon Sundback
  2. Sir Arthur Sicard
  3. Sir Neil Harphan
  4. Sir Alexander Graham Bell

Inventions App & e-Book Tests PDF Download

Loudspeaker Textbook App: Free Download iOS & Android

The App: Loudspeaker Quiz App to study Loudspeaker Textbook, General Knowledge Quiz App, and International Relations Quiz App. The "Loudspeaker Quiz" App to free download Android & iOS Apps includes complete analytics with interactive assessments. Download App Store & Play Store learning Apps & enjoy 100% functionality with subscriptions!

Loudspeaker App (Android & iOS)

Loudspeaker App (Android & iOS)

General Knowledge App (Android & iOS)

General Knowledge App (iOS & Android)

International Relations App (Android & iOS)

International Relations App (Android & iOS)

Electronic Devices App (Android & iOS)

Electronic Devices App (iOS & Android)