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प्रश्न
Why does a gas fill a vessel completely?
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उत्तर
A gas fills a vessel completely because its molecules are in continuous random motion and have negligible intermolecular forces. Therefore, they spread in all directions and occupy the entire volume of the vessel.
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संबंधित प्रश्न
The mass per unit volume of a substance is called density.
(density = mass/volume).
Arrange the following in order of increasing density-
air, exhaust from chimneys, honey, water, chalk, cotton and iron.
Arrange the following substances in increasing order of forces of attraction between particles -
water, sugar, oxygen
Name the physical state of matter which can be easily compressed.
Give two reasons to justify that Water is a liquid at room temperature.
What does the diffusion of gases tell us about their particles?
Give one example of diffusion of gases in a liquid.
Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?
Which of the following is false for gases?
Explain why?
- A gas fills a vessel completely?
- Camphor disappears without leaving any residue.
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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)
