How much oxygen is in the atmosphere?
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Explain the Hard water?
Explain virtual image?
What is Translucent body ?
What is the difference between collector & emitter of transistor, even though material used for both same?
Why does a piece of ice make drink colder?
Which way do twin screw props on a boat rotate when propelling the boat forward?
Why does a body weigh more at the poles than at the equator?
Explain about Ultraviolet rays?
Draw a graph between frequency of photon and velocity of photo electron?
what is specific fuel consumption,total fuel consumption,mean effective pressure,indicated thermal efficiency...
Why a boat rise higher, when it passes from the river water to sea water ?
What is a newton meter?