Who Invented the Aeroplane?
Who Invented the Aeroplane? The first aeroplane ever to fly was built by a French naval officer, Félix du...
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Which Poisonous Gas Has a Sweet Smell?
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Would You Prefer an Electric Vehicle?
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What Does Waterlogged Mean?
What Does Waterlogged Mean? Wood becomes waterlogged when all its cells are filled with water. It can absorb...
Why Does Stainless Steel Resist Rust?
Why Does Stainless Steel Resist Rust? Stainless steel resists rust because it contains a high proportion of...
Why Does an Automobile Have a Carburetor?
Why Does an Automobile Have a Carburetor? An automobile is driven by an internal combustion engine which...
Who Invented the Wankel Engine?
Who Invented the Wankel Engine? Felix Wankel, a German motor engineer, invented the rotary piston engine...
What Is Plastic?
What Is Plastic? A plastic, in the modern sense of the word, is a synthetic or man-made material which can...
What Is a Detergent?
What Is a Detergent? A detergent is a substance which has a power to cleanse. This description applies to...
Who Was the Last Man to Discover a Planet?
Who Was the Last Man to Discover a Planet? Clyde Tombaugh, a young American research student, made the last...
When Does a Car Use Overdrive?
When Does a Car Use Overdrive? A car uses overdrive when it is traveling at high speed over long distances....
Why Does an Astronaut Need a Spacesuit?
Why Does an Astronaut Need a Spacesuit? A spacesuit enables an astronaut to survive by providing him...