Class 8 Force And Pressure CBSE Questions & Answers

Class 8 · Force And Pressure

This is Science Class 8 Force and Pressure CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The force responsible for keeping moon moving around Sun is
  • A
    Atmospheric force
  • B
    Magnetic force
  • C
    Gravitational force
    Correct
  • D
    Contact force
2
When same force acts on large area the pressure will be
  • A
    Equal
  • B
    Less
    Correct
  • C
    Negligible
  • D
    More
3
Sharp knife cuts better than blunt knife due to
  • A
    More area of contact
  • B
    Less area of contact
    Correct
  • C
    Less force applied
  • D
    More force applied
4
Which one is not an example of contact force?
  • A
    Frictional force
  • B
    Weight
  • C
    Magnetic force
    Correct
  • D
    Muscular force
5
While the arrow moves towards the target the two force acting on it is
  • A
    Electrostatic force and gravitational force
  • B
    Magnetic force and gravitational force
  • C
    Muscular force and frictional force
  • D
    Gravitational force and frictional force
    Correct
6
If two forces act in the opposite directions on an object the resultant force acting on it is the
  • A
    Difference between two forces
    Correct
  • B
    Product of the two forces
  • C
    Sum of their reciprocal
  • D
    Sum of the two forces
7
1 Kgwt =
  • A
    9.8 N
    Correct
  • B
    12.5 N
  • C
    6.9 N
  • D
    8.9 N
8
The resulting due to action of muscles is known as
  • A
    Static force
  • B
    Muscular force
    Correct
  • C
    Gravitational force
  • D
    Magnetic force
9
Which of the following is an example that force may change the shape of an object?
  • A
    All of the above
  • B
    Making model using clay
    Correct
  • C
    Hitting of iron nail into wooden box
  • D
    Pulling a toy car to move
10
The force of friction always acts on moving object and its direction is
  • A
    Colour of the object
  • B
    As per mass of object
  • C
    Opposite to direction of motion
    Correct
  • D
    Shape of the object
11
Friction opposes the __________ between two surfaces in contact.
  • A
    Refractive motion
  • B
    Reflective motion
  • C
    Relative motion
    Correct
  • D
    Rotary motion
12
A force which opposes the motion is called
  • A
    Friction
    Correct
  • B
    Gravitational
  • C
    Sliding
  • D
    Linear
13
The frictional force exerted by fluids is also called
  • A
    Drag
    Correct
  • B
    Rung
  • C
    Slag
  • D
    Smug
14
The threaded tyres of cars, trucks and bus
  • A
    Provide better grips with ground
    Correct
  • B
    Increase the velocity of vehicles
  • C
    Decrease friction of ground
  • D
    Increase the diameter
15
A body will remain in state of motion on rolling on ground if
  • A
    Friction is very large
  • B
    Friction is absent
    Correct
  • C
    Friction is acting on same direction
  • D
    All of the above