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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
Tabulate the differences in the characteristics of states of matter.
Give reasons:
A gas fills completely the vessel in which it is kept.
Write the full forms of the following
- LPG
- CNG
Fill in the following blank with suitable words :
Solid, liquid and gas are the three ........................ of matter.
Why does a gas exert pressure?
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?
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.
Comment upon the following:-
filling a gas container
Explain why?
- A gas fills a vessel completely?
- Camphor disappears without leaving any residue.
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.
