THE SUN AND NUCLEAR ENERGY TEST PAPER

1.      An atom bomb is based on the principle of

(a) Nuclear fission             

(b) Nuclear fusion

(c) The liquid drop model 

(d) None of these  

2.      The average amount of energy released during the fission of a uranium atom is about

(a) 100 Me V                     

(b) 200 Me V

(c) 300 Me V                     

(d) 10 Me V

3.      One electron volt is equal to

(a) 1.602 X 10^-19 J             

(b) 1.602 X 10^-19V.

(c) 1.602 X 10^-19 C           

(d) None of these

4.      When a beta particle is given out, the atomic number of the parent atom

(a) Increases by unity       

(b) Decreases by unity

(c) Remains the same      

(d) Is halved

5.      The process of fusion is used for constructing a

(a) Atom bomb                 

(b) Ordinary bomb

(c) Hydrogen bomb          

(d) Neutron bomb

6.      In a nuclear reactor, the moderator is

(a) Uranium -234              

(b) Uranium-238

(c) Cadmium                   

(d) Heavy water

7.      Which of the following is a good nuclear fuel?

(a) Uranium-236                

(b) Neptunium-239

(c) Thorium-236               

(d) Plutonium-239

8.      Radioactivity was discovered by

(a) Rutherford                   

(b) Becquerel

(c) Bohar                          

(d) Madame Curie

9.      The radiant energy of the sun results from

(a) Nuclear fission             

(b) Nuclear fusion

(c) Combustion                

(d) Cosmic radiations 

10.  Which of the following has the least penetrating power?

(a) Alpha particles            

(b) Beta particles

(c) Gamma rays

(d) All have the same penetrating power

11.  The temperature of the sun's core is about

(a) 10^{3 0}C                         

(b) 10^{4 0}C

(c) 105 ⁰C                          

(d) 10^{6 0}C

12.  The nuclear fuel in the sun is

(a) Helium                                     

(b) Uranium

(c) Hydrogen                     

(d) Alpha particles

13.  Most of the propellants used in rockets are

(a) Solids                          

(b) Liquids

(c) Gases                           

(d) All the above

14.  Which of the following cannot be seen by the eye?

(a) Ultraviolet rays            

(b) Gamma rays

(c) Infra red rays               

(d) All the above 

15.  The release of energy when fission occurs in a nuclear chain reaction is the basis of

(a) Atom bomb                 

(b) Hydrogen bomb

(c) Neutron bomb              

(d) None of these  

16.  The fuel used in nuclear power plants is

(a) U-235                          

(b) U-238

(c) U-236                          

(d) Enriched U-235

17.  Which of the following is not used as a coolant in a nuclear reactor?

(a) Liquid sodium metal    

(b) Water

(c) Carbon dioxide gas      

(d) Heavy water

18.  Which of the following types of energy is produced in a nuclear reactor?

(a) Nuclear energy            

(b) Electrical energy

(c) Mechanical energy       

(d) Heat energy 

19.  The natural uranium are is processed and enriched at the Nuclear Fuel complex at

(a) Kolkata                        

(b) Mumbai

(c) Hyderabad                  

(d) None of these

20.  India's first power station is

(a)    BARC

(b)   Tarapur atomic power station

(c)    Narora atomic power station

(d) None of these