General Science Test 18

General Science

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

 
 
 
 

2. Why is it difficult to walk on ice ?

 
 
 
 

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

 
 
 
 

4. 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 ?

 
 
 
 

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

 
 
 
 

6. 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.

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Why does a parachute descend slowly ?

 
 
 
 

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