Convert the following temperatures to Kelvin scale.
(a) $25°\mathrm{C}$
(b) $373°\mathrm{C}$

Give reason for the following observation.

Naphthalene balls disappear with time without leaving any solid.
 

Give reason for the following observation:

We can get the smell of perfume sitting several metres away.

Give two reasons to justify-

Water at room temperature is a liquid.

Give two reasons to justify-

An iron almirah is a solid at room temperature.