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Atmosphere also contains considerable quantity of waters as ………..
a) frost                                                  

b) snow 

d) water vapors                  

c) rain                    

d

Fresh water needed for human requirements is only ………  of the total.
a) 0.1%                                 

b) 0.2%                

c) 0.3%                                 

d) 0.4%

b

Water present in ocean is unfit for human consumption due to ………. Concentration of dissolve salt.
a) high                                                  

b) low                    
c) moderate                                         

d) all of these

a

2.14% water is present in the form of ……….
a) ice sheets                                         

b) glaciers                             

c) both a & b                       

d) none of these

c

The heat required for converting a solid into liquid or liquid into vapors, with changing of …….. is called latent heat.
a) pressure                                            

b) temperature
c) volume                                             

d) none of these

b

Importance of water:-