Give reason for the following:

A gas exerts pressure on the walls of the containers.

Give reason for the following:

A wooden table represents solid state.

Give reason for the following:

Water at room temperature is liquid.

Give a reason for the following:

An iron almirah is solid at room temperature.

Give reason for the following:

We can easily move our hands in air but to do so in water or through a solid wooden block much effort is needed.

Give reason for the following:

In general the density of the liquid form of a substance is lower than the density of its solid form. But ice floats on the surface of water.

Give a reason for the following: A desert cooler gives more comfort on a sunny dry day rather than on humid day? 

Give reason for the following:

Water kept in an earthen pot becomes cool in summer.

Give a reason for the following:

Our palm feels cold when a drop of acetone is put on it.