Q. 3. 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 sunlight.( )
(e) Water vapour condenses to form tiny droplets of water in the upper layers of air where it is cooler.( )

Answers (1)

(a) Water vapour is present in the air only during the monsoon.  FALSE
Correct:- There is always a small amount of water vapour present in the air.
       
(b) Water evaporates into air from oceans, rivers and lakes but not from the soil.  FALSE
Correct:- 
Water also evaporates from the soil.

(c) The process of water changing into its vapour is called evaporation. TRUE
           
(d) The evaporation of water takes place only in sunlight.   TRUE
            
(e) Water vapour condenses to form tiny droplets of water in the upper layers of air where it is cooler.  TRUE

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