The portion $A B$ of the curve representing the state of matter denotes
Change from gaseous state to liquid state
The liquid state of matter
Gaseous state of matter
All of these
When the pressure on water is increased the boiling temperature of water as compared to $100°C$ will be
The figure given below shows the cooling curve of pure wax material after heating. It cools from $A$ to $B$ and solidifies along $BD$. If $L$ and $C$ are respective values of latent heat and the specific heat of the liquid wax, the ratio $L/C$ is
What are vapourization and boiling point ? Explain the process of boiling of water.
The temperature at which the vapour pressure of a liquid becomes equals to the external (atmospheric) pressure is its
Explain the process of change in state of matter by heating or cooling it.