Advertisements
Advertisements
प्रश्न
Give a reason for the following observation.
We can get the smell of perfume sitting several metres away.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Tabulate the differences in the characteristics of states of matter.
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.
Fill in the following blank with suitable words :
At room temperature, the forces of attraction between the particles of solid substances are ....................... then those which exist in the gaseous state.
State two characteristic properties of a gas.
A girl is cooking some food in the kitchen. The smell of food being cooked soon reaches her brother's room. Explain how the smell could have reached her brother's room.
Explain how, the smell of food being cooked in the kitchen reaches us even from a considerable distance.
Comment upon the following:-
kinetic energy
Which of the following is false for gases?
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.
