The specific latent heat of fusion of water is:

1. 80 Cal g^-1
2. 2260 J g^-1
3. 80 J g^-1
4. 336 J kg^-1

Heat energy supplied during the melting of a substance is utilised in :

1. increasing the kinetic energy of molecules
2. decreasing the potential energy of molecules
3. increasing the potential energy of molecules
4. decreasing the kinetic energy of molecules

Complete the following sentences:

1. When ice melts, it's volume ……………
2. Decrease in pressure over ice …………… it's melting point.
3. Increase in pressure …………… the boiling point of water.
4. A pressure cooker is based on the principle that boiling point of water increases with the ……………
5. The boiling point of water is defined as ……………
6. Water can be made to boil at 115°C by …………… pressure over it's surface.

Write the approximate value of specific latent heat of ice.