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Inventions MCQs – Certification Test 593

Refrigerator Trivia (Question 593) – App & e-Book Download

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MCQ 593: The first practical vapor compression refrigeration system was built by a Scottish Australian named:

  1. Sir James Hillier
  2. Sir Peter Cooper Hewitt
  3. Sir James Harrison
  4. Sir Thomas Edison
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Inventions Trivia App & e-Book – Refrigerator Exam Prep

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8th Class Science Test Questions

8th Class Science Quiz with Answers