class 8 force

Class 8 Science - Force & Pressure (20 MCQ Test)

Each question carries 3 marks. 1/3rd mark deducted for each wrong answer.

1. Force can:
   Only stop a moving object
   Only change shape
   Do both above and more
   


2. Unit of force is:
   Pascal
   Newton
   Joule
   


3. Which of these is a contact force?
   Gravitational force
   Magnetic force
   Frictional force
   


4. Pressure depends on:
   Force applied
   Area of contact
   Both A and B
   


5. SI unit of pressure is:
   Newton
   Pascal
   Kilogram
   


6. Which instrument measures atmospheric pressure?
   Thermometer
   Barometer
   Hydrometer
   


7. Frictional force always:
   Acts in direction of motion
   Acts opposite to motion
   Acts vertically
   


8. A non-contact force is:
   Muscular force
   Friction
   Electrostatic force
   


9. Liquids exert pressure:
   Downward only
   Upward only
   In all directions
   


10. Pascal's law is related to:
    Fluids exert equal pressure in all directions
    Force depends on mass
    Action and reaction
    


11. When area decreases, pressure:
    Increases
    Decreases
    Remains constant
    


12. Atmospheric pressure is maximum at:
    Sea level
    Mountain top
    Deep ocean
    


13. Friction is useful in:
    Walking
    Writing
    Both A and B
    


14. Unit of pressure:
    Newton
    Pascal
    Kg
    


15. Force is measured by:
    Barometer
    Spring balance
    Thermometer
    


16. Greater area results in:
    Less pressure
    More pressure
    Pressure remains same
    


17. Gravity pulls objects:
    Away from Earth
    Towards Earth
    Parallel to Earth
    


18. Friction can be reduced by:
    Lubricants
    Rough surfaces
    Increasing force
    


19. Electrostatic force is due to:
    Heat
    Magnetic field
    Electric charges
    


20. Friction converts motion energy into:
    Sound
    Heat
    Light
    

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