CBSE  /  Class 8  /  Science  /  Force and Pressure

  • 1. 
    When bicycle tube is punctured than:

  • it bursts
  • air escapes very fast
  • air escapes slowly
  • none of these

  • 2. 
    We are not crushed under the weight of air because:

  • air has no weight
  • the pressure inside our bodies is equal to atmospheric pressure
  • the pressure inside our bodies is more than atmospheric pressure
  • none of these

  • 3. 
    The non-contact force is:

  • magnetic force
  • electrostatic force
  • force of gravity
  • all of these

  • 4. 
    A boat comes to rest if we stop rowing it due to:

  • gravitation force
  • force of friction
  • muscular force
  • none of these

  • 5. 
    A football moves when we:

  • 6. 
    Which of the following is contact force:

  • force of gravity
  • magnetic force
  • force of friction
  • electrostatic force

  • 7. 
    The non-contact force is:

  • force of gravity
  • muscular force
  • force of friction
  • none of these

  • 8. 
    Pressure =

  • force/area
  • force x area
  • area/force
  • none of these

  • 9. 
    Knives, needles, saws are made sharp or pointed to:

  • decrease pressure
  • can’t say
  • increase pressure
  • none of these

  • 10. 
    The pressure with the height of the liquid column.

  • increase
  • remains same
  • decrease
  • none of these
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