Inventions MCQs (Grade 8) From Textbook

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Inventions MCQs – Certification Test 179

Plexiglas MCQ (Question 179) – Learning App & e-Book Download

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MCQ: 179

In which one of the following year, polymerized methyl methacrylate was patented?

  1. 1925
  2. 1931
  3. 1999
  4. 1963

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