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Microbes, present in air
Suspended solid particles in air
Pollutant gas, present in air
Green house gas present in air
After long periods of use, a grey spot develops on the inside of a bulb. This is as
After long periods of use, a grey spot develops on the inside of a bulb. This is because
After reflection from a plane mirror the word AMBULANCE will look like.
After the first photons of light are produced, which process is responsible for amplification of the light?
Air coolers are more suitable for
Air moves from the region where the air _
Air pressure is measured in which of the following units?
Air pressure is usually highest when the air is
Alcohol is more volatile than water because _ is lower than water.
All the four quantum numbers of two electrons in an atom are not the same. It is the law of -