CBSE  /  Class 8  /  Science  /  Force and Pressure

  • 1. 
    When a given force is applied on larger area of contact the pressure exerted by it:

  • increases
  • decreases
  • does not change
  • none of these

  • 2. 
    The pressure exerted by a liquid:

  • decreases with depth
  • does not change with depth
  • increases with depth
  • is different in different directions at he same depth

  • 3. 
    A force can:

  • change the state of motion
  • change the shape of an object
  • change the direction of motion of an object
  • all of these

  • 4. 
    Force is:

  • only push on an object
  • only pull on an object
  • either push or pull on an object
  • none of these

  • 5. 
    Liquids exert pressure on the walls of the container:

  • yes
  • no
  • can’t say
  • none of these

  • 6. 
    The pressure exerted by the air is known as:

  • air pressure
  • gas pressure
  • atmospheric pressure
  • none of these

  • 7. 
    When a rubber sucker is pressed on a plane surface than it sticks to the surface because of :

  • the pressure exerted by us
  • the air sucked by rubber
  • the pressure of atmosphere acting on it
  • none of these

  • 8. 
    The instrument used of measure atmospheric pressure is:

  • mercury barometer
  • manometer
  • pressure meter
  • none of these

  • 9. 
    The force exerted on a normal human being due to atmospheric pressure is:

  • 2 x 104N
  • 2 x 105N
  • 2 x 106N
  • none of these

  • 10. 
    The weight of air that every square centimetre of any surface carries is:

  • 1 kg
  • 10 kg
  • 1 gm
  • 100 kg
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