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प्रश्न
Which of the two diffuses faster : a liquid or a gas?
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उत्तर
Gases diffuse faster compared to liquids because the particles of gases have more space between them and have higher kinetic energy.
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संबंधित प्रश्न
Arrange the following substances in increasing order of forces of attraction between particles -
water, sugar, oxygen
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Explain why, diffusion occurs more quickly in a gas than in a liquid.
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?
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.
Comment upon the following:-
fluidity
Comment upon the following:-
shape
Which of the following is TRUE about gaseous state?
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 ______.
