General Science Test 18

General Science

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1. Why is it difficult to walk on ice ?

 
 
 
 

2. Why does a parachute descend slowly ?

 
 
 
 

3. When a bicycle tube is pumped up, the bicycle pump gets heated. Which of the following is the cause of production of this heat energy ?

 
 
 
 

4. Which of the two will flow more rapidly down a channel of given slope, mercury or water ?

 
 
 
 

5. At what angle a javelin should be thrown so that it attains the maximum horizontal range ?

 
 
 
 

6. Why does the pressure of air in tyres increase when the vehicle is set in motion ‘I

 
 
 
 

7. Which of the following will happen if the force of earth’s, gravitation disappears suddenly ?

 
 
 
 

8. A piece of iron with a cavity in it is heated. What will be the effect on the cavity ?

 
 
 
 

9. If a body is thrown, from the surface of earth, with a velocity- the body will leave th,:~ earth and go off into interplanetary space.

 
 
 
 

10. Why does a diver put oil in his ears before diving,?

 
 
 
 

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