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प्रश्न
Fill in the following blank with suitable words :
At room temperature, the forces of attraction between the particles of solid substances are ....................... then those which exist in the gaseous state.
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उत्तर
At room temperature, the forces of attraction between the articles of solid substances are much more than those which exist in the gaseous state.
संबंधित प्रश्न
Tabulate the differences in the characteristics of states of matter.
Give reasons:
A gas exerts pressure on the walls of the container.
Arrange the following substances in increasing order of forces of attraction between particles -
water, sugar, oxygen
If the fish is being fried in a neighbouring home, we can smell it sitting in our own home. Name the process which brings this smell to us.
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 :
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?
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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)
2 litre He gas at 2 atm and 300 K is inserted into a 4 litre rigid container containing N2 at 600 K and 4 atm. Finally mixture is maintained at 600 K temperature. The final pressure of gaseous mixture would be ______ torr.
