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प्रश्न
Give reason for the following:
Gases exert pressure in all directions.
Gases unlike solids and liquids exert pressure in all directions.
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उत्तर १
The gas particles have a very weak attractive force between them and move randomly ultimately exert pressure in all direction. Their molecules are bouncing all around the container because they are so small, then gravity has very little effect on them.
उत्तर २
Impact of gas molecules with high velocity causes pressure to be exerted on the walls.
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