PHYSICS MULTIPLE CHOICE QUESTIONS SET 20

PHYSICS  

MULTIPLE CHOICE QUESTIONS SET 20 

1. Liquid metal is
A. zinc              

B. lead                     

C. saline                   

D. mercury
Answer: Option  d
 

2. When fast moving electrons are stopped suddenly by a metal target
A. beta rays are produced                     

B. gamma rays are produced
C. x–rays are produced                   

D. alpha rays are produced
Answer: Option  c
 

3. For galvanizing iron,which one of the following is used?
A. copper                   

B. lead                  

C. zinc                     

D. tin
Answer: Option  c
 

4. The Bowman’s capsule function as a
A. carrier                 

B. barrier              

C. secretor                   

D. filter
Answer: Option  d
 

5. Which one of the following is a physical change?
A. rusting of iron               

B. boiling of water             

C. burning of an egg         

D. boiling of candle
Answer: Option  b
 

6. Which substance is used to make rubber strong?
A. sponge              

B. iron                

C. sulphur                       

D. chlorine
Answer: Option  c
 

7. If sound persists even after its source has stoped producing sound,then its called
A. free vibration                

B. resonance              

C. reverberation             

D. forced vibration
Answer: Option  c
 

8. When the speed of the body is doubled,its kinetic energy becomes
A. half                     

B. doubled                  

C. one–fourth              

D. quadruple
Answer: Option  d
 

9. When a body moves with uniform velocity its acceleration is
A. maximum            

B. doubled                    

C. zero                    

D. tripled
Answer: Option  c
 

10. On adding a little antimony to germanium,we get
A. n–type semiconductor                            

B. p–type semiconductor          
C. metallic conductor                                  

D. intrinsic conductor
Answer: Option  a