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Boilers MCQ e-Book PDF | Inventions App Download

Inventions Cerification Guide: Certification Test 423

Boilers MCQ App Download & e-Book - 423

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MCQ: 423

Water tube steam boiler was invented by

  1. Sir George Babcock
  2. Sir Steven Wilcox
  3. Sir Pierre Michaux
  4. both a and b
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Boilers Cerification Guide: Inventions App & eBook MCQ

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8th Class Science Test Questions

8th Class Science Quiz with Answers