Inventions Quizzes
Inventions Practice Test 66
The Crayons Trivia Questions and Answers PDF (Crayons Quiz Answers PDF e-Book) download Test 66 to learn inventions online courses. Practice Inventions and Inventors MCQ questions, Crayons Multiple Choice Questions (MCQ) for online college degrees. The Crayons Quiz App: Download free certification app for digital camera, half tone engraving, foot bag, spectograph, crayons test prep for online elementary school.
The Quiz: Which one of them invents crayons; "Crayons" App (iOS, Android) with answers: Sir Willard Boyle; Sir George Smith; Sir Firs Cry; Sir O.A North; for online certifications. Study inventions and inventors questions and answers, Apple e-Book to download free sample for online school courses.
Which one of them invents crayons?
Which one of the following received a patent for the far ultraviolet camera?
Foot Bag was invented by
Halftone engraving was patented by
Which one of the following invented the first self-contained Digital Camera?
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