General Science Class 5th (MCQs=489)

The speed of sound in dry, sea level air at temperature of 0oC is………..
a) 820 m/s                                            

b) 332 m/s
c) 1680 m/s                          

d) 5130 m/s

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The speed of at 20oC is…….NTS PST (B) -------2021
a) 332 m/s                                            

b) 344 m/s
c) 1680 m/s                          

d) 5130 m/s

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The speed of sound in water is approximately
a) 1525 m/s                         

b) 340 m/s
c) 1680 m/s                          

d) 5130 m/s

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Sound is kind of……………….
a) Work                                

b) Energy
c) Force                                                 

d) None

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Sound is produced due to……..
a) Friction                                             

b) Refraction       
c) Vibration                        

d) Circulation

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Sound is slowest in…………….
a) Liquid                                               

b) Solid 
c) Vacuum                           
d) Air

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