question_answer 11)

Which of the following statements are true? (a) Water vapour is present in air only during the monsoon. (b) Water evaporates into air from oceans, rivers and lakes but not from the soil. (c) The process of water changing into its vapour is called evaporation. (d) The evaporation of water takes place only in the sunlight. (e) Water vapour condenses to form tiny droplets of water in the upper layers of air where it is cooler.  

Answer:

(a) False, water vapour is always present in air in small proportion. (b) False, water evaporates into air from oceans, rivers, lakes and also from the soil. (c) True (d) False, evaporation may occur in sunlight as well as wind. (e) True