why should we wear cotton clothes in summer

 cotton clothes are good absorbers of water it helps in absorption of sweat and leaves it exposure for simple vaporization the sweat turns into vapour very fast the latent heat of vaporization is taken from the body and we feel good

what type of clothes should we wear in summer

In summer we should wear white or light colour cloth white aur light coloured clothes are good reflector of light due to this we feel cool

why are we able to sip hot tea or milk faster from a saucer rather than a cup

The area of surface of Milk or tea in a cup is less. It cause slow evaporation due to which it becomes old slowly so it takes time in sipping when the tea is kept in a plate the area of the surface of milk or tea increases it it leads to fast evaporation. Thus, it takes list time in cooling show the milk or tea can be sipped quickly

why does our Palm feel cold when we put some Acetone or petrol or perfume on it

Acetone/ petrol or scent are volatile substance when these are put on plan their vaporization becomes faster due to the plum for this the substance take energy from the plan due to which it become cold

how does the water kept in an pitcher ( Earthen pot, Matka) become cool during summer

During summer there is less water vapour in atmosphere teachers have a small pores though which water keeps up coming out slowly. This happens around the pitches it leads to cooling a water of the pitcher.

why does a desert cooler cool better on a hot dry day

Hot dry days have less water vapour in atmosphere they encourage to increase the rate of evaporation. Cooler runs its water it takes energy from atmosphere for its vaporization and evaporated fast. Thus cooler cools better on a hot dry day

why do liquids have fixed volume

A liquid has fixed volume because the space among its molecule at a given temperature is fixed