RRB Group D Science Test 8

1. Silk is produced by

 
 
 
 

2. The steam was invented by

 
 
 
 

3. The injection of anti-toxin is given to prevent

 
 
 
 

4. Rate of evaporation does not depend upon

 
 
 
 

5. Which element is found in haemoglobin ?

 
 
 
 

6. Which of the following disease cannot be cured?

 
 
 
 

7. Cobalt- 60 is commonly used in radiation therapy because it exits?

 
 
 
 

8. On which scientific principle ‘endoscopy’ works ?

 
 
 
 

9. The S.I unit of electric field intensity is

 
 
 
 

10. The energy of a man sitting in a moving train is

 
 
 
 

11. Who propounded the theory of DNA synthesis ?

 
 
 
 

12. The absorber of neutron in a nuclear reactor is

 
 
 
 

13. Nose starts bleeding when one climbs up mountain due to

 
 
 
 

14. The velocity of γ rays is

 
 
 
 

15. The chemical behavior of an atom is determined by its

 
 
 
 

16. The rate of change of momentum is proportional to

 
 
 
 

17. The gravitational force of attraction between the sun and earth is balanced by

 
 
 
 

18. Piezometer is used to measure

 
 
 
 

19. One watt is equal to

 
 
 
 

20. Radiation can be detected by

 
 
 
 

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