$(a)$ Conversion of solid to vapour is called sublimation. Name the term used to denote the conversion of vapour to solid.
$(b)$ Conversion of solid state to liquid state is called fusion; what is meant by latent heat of fusion?

The boiling points of diethyl ether, acetone, and $n-$butyl alcohol are $35\,^\circ\text{C}$, $56\,^\circ\text{C}$, and $118\,^\circ\text{C}$ respectively. Which one of the following correctly represents their boiling points in the Kelvin scale?

Give reasons for the following:
$(a)$ Water droplets appear on the outer surface of a tumbler containing ice-cold water.
$(b)$ People prefer to wear cotton clothes in summer.
$(c)$ On a hot sunny day,people sprinkle water on the roof or open ground.

How does the melting point of a substance indicate the strength of its intermolecular forces of attraction?

How does the water kept in an earthen pot (matka) become cool during summer?

Evaporation is called as