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प्रश्न
Give a reason for the following observation.
We can get the smell of perfume sitting several metres away.
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उत्तर
Perfume is also a volatile liquid. It immediately turns into vapour and diffuses into the air, which is why we can smell it even if we are sitting far away. This phenomenon occurs as a result of diffusion.
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संबंधित प्रश्न
Which of the two diffuses faster : a liquid or a gas?
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.
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 full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment :
A substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.
Comment upon the following:-
fluidity
Comment upon the following:-
filling a gas container
Comment upon the following:-
density
2 litre He gas at 2 atm and 300 K is inserted into a 4 litre rigid container containing N2 at 600 K and 4 atm. Finally mixture is maintained at 600 K temperature. The final pressure of gaseous mixture would be ______ torr.
