Practice Class 8 MCQs From Textbooks
Free Floppy Disk MCQ App Download | Inventions e-Book PDF
Inventions Study Material: Mock Test 82
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The MCQs: In which one of following year, floppy disk was patented; "Floppy Disk" App (Android, iOS) with answers: 1977, 1905, 1932, and 1967 for virtual online school. Practice inventions and inventors questions and answers, Apple Book to download free chapter for virtual online school.
In which one of the following year, floppy disk was patented?
Compound Microscope first appeared in Europe in
Neutron were discovered by
Jigsaw Puzzles was invented by
The refrigerator was invented by
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