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प्रश्न
Give two reasons to justify that Water is a liquid at room temperature.
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उत्तर
Water is a liquid at room temperature due to the following characteristics:
- Water has fixed volume, but no fixed shape.
- Water flows freely.
Particles of water have large intermolecular spaces between them and intermolecular force of attraction between these particles is small. These characteristics facilitates water to behave like a liquid.
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संबंधित प्रश्न
Tabulate the differences in the characteristics of states of matter.
Arrange the following substances in increasing order of forces of attraction between particles -
water, sugar, oxygen
State whether the following statement is true or false :
Red-brown bromine vapour diffuse into air in a gas jar but the colourless air molecules do not diffuse into bromine vapour.
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.
Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?
______ is not affected by gravity.
Comment upon the following:-
rigidity
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)
Two gases A and B having molecular weights 60 and 45 respectively are enclosed in a vessel. The wt. of A is 0.50 g and that of B is 0.2 g. The total pressure of the mixture is 750 mm. The partial pressure of the gases B is ______ mm Hg.
