RRB Group d Science test 7

1. Which of the following is not caused by refraction of light?

 
 
 
 

2. Radioactivity is a property of

 
 
 
 

3. The electric generator converts

 
 
 
 

Match the following :

        Diseases              Affected Organs

 a)Tuberculosis      –  1)  Spinal cord

 b) Plague              – 2) Eye

 c) Tetanus             – 3) Lungs

 d) Trachoma         – 4) Lymph nodes

 
 
 
 

5. The chemical matter that prevents blood clotting is

 
 
 
 

6. The rainbow is formed by

 
 
 
 

7. The hydraulic brake used in automatic vehicles

 
 
 
 

9. Test tube baby means

 
 
 
 

9.The positive end of battery is called

 
 
 
 

10. Which of the following is present in atmosphere?

 
 
 
 

11. The largest phase in cell division is

 
 
 
 

12. In Ionic solid, the velocity of electricity is

 
 
 
 

13. Which type of protein is found in virus?

 
 
 
 

14. Photosynthesis does not take place in

 
 
 
 

15. Oil rises up to wick in a lamp because

 
 
 
 

16. Mention the ray which appears to originate outside the earth

 
 
 
 

17. Supersonic jets cause pollution by thinning of

 
 
 
 

18. Which one of the following is commonly called edible sponge mushroom?

 
 
 
 

19. Which of the following gases is used to prepare Ammonia gas?

 
 
 
 

20. What is gypsum ?

 
 
 
 

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