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प्रश्न
Comment upon the following:-
rigidity
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उत्तर
The rigidity can be expressed as the tendency of matter to resist a change in shape.
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संबंधित प्रश्न
Give reasons:
A gas fills completely the vessel in which it is kept.
Give reasons:
A gas exerts pressure on the walls of the container.
Give a reason for the following observation.
Naphthalene balls disappear with time without leaving any solid.
Why do gases have neither a fixed shape nor a fixed volume?
Give one example of diffusion of gases in a liquid.
Why do gases diffuse very fast?
Why does a gas fill a vessel completely?
When a gas jar containing colourless air is kept upside down over a gas jar full of brown-coloured bromine vapour, then after some time, the brown colour of bromine vapour spreads into the upper gas jar making both the gas jars appear brown in colour. Which of the following conclusion obtained from these observations is incorrect?
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.
Why do gases not have fixed shape?
