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प्रश्न
Which of the following diffuses fastest and which the slowest?
Solid, Liquid, Gas Give reasons for your answer.
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उत्तर
Gases diffuse fastest and solids diffuse slowest when we compare solids, liquids and gases.
Explanation: Gases diffuse fast because the force of attraction between their particles is very low or negligible and there are vast spaces between the particles. The force of attraction between the particles of solids is very strong and there is no space between the particles due to their compact arrangement. As a result, rate of diffusion in solids is slowest.
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संबंधित प्रश्न
Comment upon the following:
rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
Give reasons:
A gas fills completely the vessel in which it is kept.
Which of the two diffuses faster : a liquid or a gas?
Why do gases have neither a fixed shape nor a fixed volume?
What does the diffusion of gases tell us about their particles?
Explain why, diffusion occurs more quickly in a gas than in a liquid.
Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?
The substance X normally exists in a physical state which can flow easily but does not fill its vessel completely. It also turns anhydrous copper sulphate blue. When substance X is cooled excessively, it changes into a substance Y which has a fixed shape as well as a fixed volume. If, however, the substance X is heated strongly, it changes into a substance Z which has neither a fixed shape nor a fixed volume.
- Name the substances (i) X (ii) Y and (iii) Z.
- What is the process of conversion of X into Y known as ?
- At which temperature X gets converted into Y ?
- What is the process of conversion of X into Z known as ?
- At which temperature X gets converted into Z ?
The space between ______ particles is the greatest one.
A gaseous mixture of He and O2 is found to have a density of 0.518 gL-1 at 25° C and 720 torr. The mass percent of helium in this mixture is ______.
