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प्रश्न
Why do gases not have fixed shape?
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उत्तर
- Gases possess more intermolecular space and less forces of attraction.
- They can move freely at any direction.
- They have the property of filling the entire part of a container by taking the shape of the container.
So, gases do not have fixed shape.
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संबंधित प्रश्न
The mass per unit volume of a substance is called density.
(density = mass/volume).
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air, exhaust from chimneys, honey, water, chalk, cotton and iron.
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- LPG
- CNG
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The smell of hot sizzling food reaches us even from a considerable distance but to get the smell from cold food, we have to go close to it.
When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment :
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 substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.
The space between ______ particles is the greatest one.
Comment upon the following:-
kinetic energy
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| Fig. I | Fig. II |
In figure-I, an air column of length ℓ1 is entrapped by a column of Hg of length 8 cm. In figure-II length of same air column at the same temperature is ℓ2. The `ℓ_1/ℓ_2` is:
(1 atm = 76 cm of Hg)


