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प्रश्न
Fill in the following blank with suitable words :
Solid, liquid and gas are the three ........................ of matter.
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उत्तर
Solid, liquid and gas are the three states of matter.
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संबंधित प्रश्न
Comment upon the following:
rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
Give a reason for the following observation.
Naphthalene balls disappear with time without leaving any solid.
Name two gases which are supplied in compressed form in homes and hospitals.
If the fish is being fried in a neighbouring home, we can smell it sitting in our own home. Name the process which brings this smell to us.
Which of the following diffuses fastest and which the slowest?
Solid, Liquid, Gas Give reasons for your answer.
Give two reasons to justify that Water is a liquid at room temperature.
Explain why, diffusion occurs more quickly in a gas than in a liquid.
Why do gases diffuse very fast?
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?
