Class 8 MCQs From Inventions Textbook

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Inventions Study Guide: Certification Test 525

Screw Propeller Notes App & e-Book: MCQ 525

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MCQ: 525

The ship's propeller was discovered by

  1. Sir Samuel Sharp
  2. Sir John Patch
  3. Sir Lillian Moller Gilbreth
  4. Sir Nicholas Jacques Conte
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8th Class Science Test Questions

8th Class Science Quiz with Answers