Inventions MCQs (Grade 8) From Textbook
Free Electric Blanket Notes App | Inventions e-Book PDF Download
Inventions Competitive Exam MCQs – Mock Test 19
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The MCQ: In which one of following year, electric blanket was patented; "Electric Blanket Notes" App (iOS, Android) with answers: 1912, 1906, 1974, and 1987 for online elementary school classes. Study inventions and inventors questions and answers, Google e-Book to download free chapter for school certificate.
In which one of the following year, electric blanket was patented?
Automatic postal sorted that could handle 200,000 letters an hour was invented in
The variable pitch aircraft propeller was invented by
In which one of the following year, the folding bed was invented?
Plastic bottle makes was invented by
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