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Inventions Exam Prep: Certification Test 875

Photophone Learning App & e-Book: MCQ 875

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MCQ: 875

The photo phone was invented by an American scientist named as

  1. Sir Alexander Graham Bell
  2. Sir Igory Sikorsky
  3. Dr Abraham Gesner
  4. Sir Oliver Evans
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Photophone Exam Prep: Inventions App & eBook MCQ

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8th Class Science Test Questions

8th Class Science Quiz with Answers