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helium MCQ App Download - Inventions e-Book

Inventions Online Tests

helium MCQ (Multiple Choice Questions) PDF Download

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The Helium Multiple Choice Questions (MCQ Quiz) with Answers PDF (helium MCQ PDF e-Book) download to study Inventions Tests. Learn Inventions and Inventors Multiple Choice Questions and Answers (MCQs), helium quiz answers PDF for online elementary school classes. The helium MCQ App Download: Free Inventions App to study modern neuroscience, foot bag, post-it-note, a.c test prep for virtual online school.

The MCQ: In which one of the following year, the helium extract process from natural gas was invented "helium" App Download [Free] with answers: 1915, 1940, 1910, and 1950 for online elementary school classes. Solve Inventions and Inventors Quiz Questions, download Google e-Book (Free Sample) for school certificate.

helium Questions and Answers PDF Download

MCQ: 1

In which one of the following year, the helium extract process from natural gas was invented?

  1. 1915
  2. 1940
  3. 1910
  4. 1950
MCQ: 2

The process to extract helium from natural gas was invented by

  1. Sir Henry Ruttan
  2. Sir John Cunningham McLennan
  3. Dr Larry wang
  4. Sir George Beers

Inventions Practice Tests

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