Advertisements
Advertisements
प्रश्न
Give the reason for the following:
The kinetic energy of molecules of gases is very large & of solids, the least.
उत्तर
The Kinetic Energy of molecules of gases is very large because:
-
- The inter-particle space between the particles is maximum.
- The Inter-particle attraction between the particles is negligible. Whereas the kinetic energy of molecules of solids is least.
The Kinetic Energy of molecules of solids is the least because:
- The Inter-particle space between the particles is minimum.
- The Inter-particle attraction between the particles is very strong.
APPEARS IN
संबंधित प्रश्न
Why is ice at 273 K more effective in cooling than water at the same temperature?
Mention a change which is always desirable.
When water is cooled to a temperature x, it gets converted into ice at temperature x by a process called P. And when ice at temperature x is warmed, it gets reconverted into water at the same temperature x in a process called Q.
- What is the value of temperature x in Kelvin ?
- What is the process P known as ?
- What is the name of energy released during process P ?
- What is the process Q known as ?
- What is the name of energy absorbed during process Q ?
What do you observe when: little amount of curd is added to a bowl containing warm milk and kept for five hours.
How does a liquid changes into its gaseous state? Explain
Write whether the following statement is true or false:
A gas has no free surface.
Name the phenomenon which causes the following changes:
Disappearance of camphor when exposed to air
State which of the following statement is true or false. If false write the correct statement.
Atoms/molecules in gases move only about their own positions.
What will happen if....? And why?
A bell is made of wood.
What is inter-conversion of matter. Give the meaning of the terms involved in inter-conversion of matter
(a) Melting
(b) Vaporisation
(c) Liquefaction or condensation,
(d) Solidification or freezing
(e) Sublimation.
