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Inventions MCQs – Certification Test 644

Periodic Table Quiz (Question 644) – Learning App & e-Book Download

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MCQ 644: Periodic table was patented by a Russian Chemist named as:

  1. Dmitri Mendeleev
  2. Sir Henry W. Seelay
  3. Sir Schuyler Skaats Wheeler
  4. Sir Samuel W. Francis
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