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प्रश्न
Comment upon the following:-
fluidity
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उत्तर
Fluidity is the ability to flow.
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.
Give reasons:
A gas fills completely the vessel in which it is kept.
Give reasons:
A gas exerts pressure on the walls of the container.
Write the full forms of the following
- LPG
- CNG
Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?
Why does a gas exert pressure?
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 :
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 ?
The space between ______ particles is the greatest one.
