Explain with an example to demonstrates that when a liquidevaporates, it takes heat from its surroundings.
A patient suffering from high fever is advised to put wet clot strips on his forehead. Why ?
Give two applications of evaporation.
Why is cooling produced on evaporation of a liquid ?
Wet clothes dry more quickly on a warm dry day than on a cold humid day. Explain.
Water in a dish evaporates fasterjhan in a bottle. Give reason.
A liquid can change into vapour state at all temperatures.
State three factors which affect the rate of evaporation of a liquid.