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प्रश्न
Comment upon the following:-
density
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उत्तर
Density is mass per unit volume.
संबंधित प्रश्न
Comment upon the following:
rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
Give reasons:
We can easily move our hand in air, but to do the same through a solid block of wood, we need a karate expert.
Name the physical state of matter which can be easily compressed.
Name two gases which are supplied in compressed form in homes and hospitals.
Explain why, when a bottle of perfume is opened in a room, we can smell it even from a considerable distance.
Explain why, diffusion occurs more quickly in a gas than in a liquid.
A substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.
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 ?
Comment upon the following:-
fluidity
Which of the following is TRUE about gaseous state?
