Question

Give four points of distinction between evaporation and boiling

Answer 1

1-Evaporation requires internal source of energy but boiling requires external source of energy.
2-Evaporation takes place slowly but boiling is a rapid process.
3-Evaporation does not requires any particular temperature but boiling requires a particular temperature.
4-Evaporation produces cooling but boiling does not produces any cooling  

Answer 2

1.The phenomenon of chaning of liquid phase into gaseous phase at any temperature is called evaporation where as boiling is the phenomenon of change of liquid phase in to gaseous phase at a particular temperature.
2.Evaporation is a surface phenomenon where as boiling is total body phenomenon.i.e, evaporation takes place at the surface of the liquid and boiling takes place through out the liqiud 
3.Evaporation depends on shape of the container where as boiling doesn't depend on the shape of container.
4.For boiling to occur you need to supply energy(heat) where as for evaporation to occur you don't need to supply energy(heat) it is taken from the surroundings.