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प्रश्न
Give reasons:
A gas exerts pressure on the walls of the container.
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उत्तर
- Gas particles move randomly in all directions at high speed.
- As a result, the particles hit each other and also forcefully hit the walls of the container, exerting pressure on them.
संबंधित प्रश्न
Comment upon the following:
rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
Name the physical state of matter which can be easily compressed.
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.
What does the diffusion of gases tell us about their particles?
Give one example of diffusion of gases in a liquid.
Why do gases diffuse very fast?
Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?
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?
Look at the diagram on the right side. Jar A contains a red-brown gas whereas jar B contains a colourless gas. The two gas jars are separated by a galas plate placed between them
- What will happen when the glass plate between the two jars is pulled away?
- What name is given to the phenomenon which takes place?
- Name the brown gas which could be in jar A.
- Which is the colourless gas most likely to be present in jar B?
- Name one coloured solid and one colourless liquid which can show the same phenomenon.
Explain why?
- A gas fills a vessel completely?
- Camphor disappears without leaving any residue.
