Advertisements
Advertisements
प्रश्न
Name the temperature at which :
- a liquid changes into a gas.
- a solid changes into a liquid.
उत्तर
The temperature at which a liquid change into gas is called boiling point.
(ii) The temperature at which a solid change into liquid is called melting point.
APPEARS IN
संबंधित प्रश्न
Ripening of fruits is a desirable change.
What do you understand by the change of phase of a substance?
Give the usual name for the following :
Heat required to change the state of a substance without changing the temperature.
Fill in the following blank with suitable words :
When steam condenses to form water, heat is .......................
Define the term 'latent heat of vaporisation' of a liquid. What is the value of the latent heat of vaporisation of water ?
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 happens to a metal ball when it is heated? What does this show?
Explain the term boiling point
With the help of a simple diagram how would you show that – solids expand on heating
Fill in the blank with the correct word Given below.
Intermingling of molecules is called ____
