MCQ questions for class 8 Science Chapter 12 Friction
Question 1: What is the force that opposes the motion of one surface over another?
Gravity
Magnetism
Friction
Tension
Question 2: Which of the following factors does not affect friction?
Nature of surfaces
Mass of the object
Temperature
Speed of the object
Question 3: What is the term for the force exerted by a moving object?
Static friction
Dynamic friction
Limiting friction
Rolling friction
Question 4: Which type of friction is experienced by an object when it is at rest?
Static friction
Dynamic friction
Limiting friction
Rolling friction
Question 5: What is the term for the force that opposes the motion of an object through a fluid (liquid or gas)?
Air resistance
Surface tension
Viscosity
Friction
Question 6: Which of the following surfaces produces the least friction?
Rough surface
Smooth surface
Irregular surface
Soft surface
Question 7: What is the term for the force that opposes the motion of an object in contact with a surface?
Gravity
Magnetism
Friction
Tension
Question 8: Which type of friction occurs when a body rolls over another surface?
Static friction
Dynamic friction
Rolling friction
Limiting friction
Question 9: What is the term for the force that opposes the relative motion or tendency of such motion of two surfaces in contact?
Air resistance
Surface tension
Viscosity
Friction
Question 10: Which of the following factors does not affect the force of friction?
Nature of surfaces
Mass of the object
Temperature
Area of contact
Question 11: What is the term for the force exerted by a non-moving object on another object?
Static friction
Dynamic friction
Limiting friction
Rolling friction
Question 12: Which type of friction is experienced by an object in motion?
Static friction
Dynamic friction
Limiting friction
Rolling friction
Question 13: What is the term for the force of friction that opposes the initiation of motion between two surfaces?
Air resistance
Surface tension
Viscosity
Static friction
Question 14: Which type of friction is the smallest and easiest to overcome?
Static friction
Dynamic friction
Rolling friction
Limiting friction
Question 15: What is the term for the force that opposes the sliding motion between two surfaces?
Air resistance
Surface tension
Viscosity
Sliding friction
Question 16: Which of the following is a method to reduce friction?
Using lubricants
Increasing the mass of the object
Using rough surfaces
Increasing the speed of the object
Question 17: What is the term for the force that opposes the motion of an object through air?
Air resistance
Surface tension
Viscosity
Friction
Question 18: Which type of friction is experienced by an object when it slides over a surface?
Static friction
Dynamic friction
Rolling friction
Sliding friction
Question 19: What is the term for the force that opposes the motion of an object through a liquid?
Air resistance
Surface tension
Viscosity
Friction
Question 20: Which type of friction is experienced by an object when it rolls over a surface?
Static friction
Dynamic friction
Rolling friction
Limiting friction
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