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प्रश्न
Why does a gas exert pressure?
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उत्तर
When gas is stored in a container, the fast moving particles of the gas collide with each other and with the walls of the container; thus, exerting pressure on the walls of container.
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संबंधित प्रश्न
Comment upon the following:
rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
Give reasons:
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State two characteristic properties of a gas.
A student placed a gas jar containing air in the upside down position over a gas jar full of red-brown bromine vapours. He observed that the red-brown colour spread upwards into the jar containing air. Based on this observation, the student concluded that it is only the bromine vapour which moves up and diffuses into air in the upper jar, the air from the upper jar does not move down by diffusion into the lower jar containing bromine vapours. Do you agree with this conclusion of the student? Give reason for your answer.
A substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.
Why do gases not have fixed shape?
The space between ______ particles is the greatest one.
Comment upon the following:-
rigidity
Which of the following is false for gases?
