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प्रश्न
A substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.
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उत्तर
Gases have neither a fixed shape nor a fixed volume; they acquire the shape and volume of the vessel in which they are kept.
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संबंधित प्रश्न
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:
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.
Which of the two diffuses faster : a liquid or a gas?
Give two reasons to justify that Water is a liquid at room temperature.
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 ?
How does the substance of gaseous particles change to a liquid state?
Comment upon the following:-
rigidity
Comment upon the following:-
filling a gas container
