Which of the following statements are “true”?

a. Water vapor 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 sunlight.


e. Water vapor condenses to form tiny droplets of water in the upper layers of air where it is cooler.

a. False, Water vapor 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. Evaporation is the process by which water changes into vapour.


d. False. The evaporation of water takes place in sunlight as well as wind.


e. True. Water vapour condenses to form tiny droplets of water in the upper layers of air where it is cooler.


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