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Science and Technology
Why vaccination prevents us from having smallpox?
Outer Space
What is the difference between a meteor and a comet?
Human Biology
How much oxygen does a person consume in a minute?
Human Biology
How does the human body make blood?
Outer Space
Why stars flicker whereas planets shine steadily?
How things work
How much petrol the fuel tank of an airplane carries?
How things work
Why is a road linking two cities called highway?
Science and Technology
Why hot water appears milky white when drawn from the faucet?
Living Creatures
Which is the most venomous (poisonous) snake in the world?
Planet Earth
Why is rainbow shaped semi-circle? What is the reason for it being colorful?
Planet Earth
What is the weight of the planet Earth? Is it constant or increasing?
Outer Space
Did Neil Armstrong really go to the Moon or NASA had faked the Moon landings?
Science and Technology
What Are Sound Waves Made of?
Science and Technology
Which gasses are used in electric bulbs? Or is a vacuum left inside?
How things work
Why do sliced potato and apple turn dark in open air?
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