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प्रश्न
Why do gases have neither a fixed shape nor a fixed volume?
उत्तर
Gases do not have fixed shape and volume because they have very small inter-molecular force of attraction and large inter-molecular space. Since, the particles of a gas are free to move anywhere, it takes the shape and volume of the container.
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संबंधित प्रश्न
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Solid, Liquid, Gas Give reasons for your answer.
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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.
______ is not affected by gravity.
Comment upon the following:-
shape
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