Class 8 Science Chapter 9 MCQ (Multiple Choice Questions) of Friction updated for academic session 2024-25 CBSE and state board students free to use. All the contents are prepared from latest NCERT Textbooks issued for session 2024-25. Every topic given in chapter 9 of class 8 science is covered in the format of MCQ quiz with suitable answers and explanation. Practice with these questions to score better in exams.

Class 8 Science Chapter 9 MCQ

Class: 8Science
Chapter: 9Friction
Contents: MCQ Online Tests
Session:2024-25

MCQ Tests with Answers for Class 8 Science Chapter 9

Q1

Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play:

[A]. Only if the objects are solid.
[B]. Only if one of the two objects is liquid.
[C]. Only if one of the two objects is gaseous.
[D]. Irrespective of whether the objects are solid, liquid or gaseous.
Q2

To sharpen the blade of a knife by rubbing it against a surface, which of the following will be most suitable?

[A]. Stone
[B]. Plastic block
[C]. Wooden block
[D]. Glass block
Q3

A toy car released with the same initial speed will travel farthest on:

[A]. Muddy
[B]. Polished marble surface
[C]. Cemented surface
[D]. Brick surface
Q4

A spring balance can be used to measure:

[A]. Mass of an object and force acting on an object
[B]. Force acting on an object and density of an object.
[C]. Force acting on an object and weight of an object
[D]. Weight of an object
Q5

If we apply oil on door hinges, the friction will:

[A]. [A] Increase
[B]. Decrease
[C]. Disappear Altogether
[D]. Will remain unchanged
Q6

The friction between two surfaces does not depend on one of the following. This one is:

[A]. Amount of surface area of the two objects which is in contact with each other
[B]. Weight of the object which tends to move on the surface of other object
[C]. Degree of smoothness of surfaces of two objects in contact with each other
[D]. Degree of roughness of surfaces of two objects in contact with each other
Q7

A boy rolls a rubber ball on a wooden surface. The ball travels a short distance before coming to rest. To make the same, ball travel longer distance before coming to rest, he may:

[A]. Spread a carpet on the wooden surface.
[B]. Cover the ball with a piece of cloth.
[C]. Sprinkle talcum powder on the wooden surface.
[D]. Sprinkle sand on the wooden surface.
Q8

Which of the following is not an advantage of fiction?

[A]. It enables drawing to be made on paper
[B]. It enables fallen things to be picked up
[C]. It enables rubber pads to be rubbed off
[D]. It enables vehicles to move on ground
Q9

Which of the following statements is or are incorrect?

[A]. Static friction is greater than rolling friction
[B]. Sliding friction is less than rolling friction
[C]. Rolling friction is less than static friction
[D]. Static friction is greater than sliding friction
Q10

If the static friction between two surfaces X and Y is found to be 20 N, then the rolling friction between these two surfaces should be most likely be:

[A]. 25 N
[B]. 20 N
[C]. 5 N
[D]. 50 N
Q11

If the static friction between two surfaces P and Q is measured to be 50 N, then the sliding friction between these two surfaces is most likely to be:

[A]. 75N
[B]. 45N
[C]. 55N
[D]. 65N
Q12

Which of the following statement is or are incorrect?

[A]. Friction can never be entirely eliminated.
[B]. Dolphins are streamlined body by nature to reduce friction with water.
[C]. The use of ball bearing makes the wheel roll smoothly over the axle.
[D]. None of the above.
Q13

Which of the following will produce the maximum friction?

[A]. Rubbing of sand paper on glazed paper
[B]. Rubbing of sand paper on glass table top
[C]. Rubbing of sand paper on aluminium frame
[D]. Rubbing of sand paper on sand paper
Q14

Consider the following statements and choose the correct one:

[A]. Friction can be reduced by making the surfaces smooth by polishing.
[B]. Friction can be reduced by applying lubricants to the rubbing surfaces
[C]. Friction can be reduced by using wheel to move objects
[D]. All the above.
Q15

Four similar cars having exactly the same mass and running at the same speed on the same road when brakes are applied at the same time. The cars come to a stop after covering a distance of 5 m, 5.5 m, 4.8 m, and 5.2 m respectively. The friction between the brake pads and disc will be the maximum in car which travels the distance of:

[A]. 5 m
[B]. 5.5 m
[C]. 4.8 m
[D]. 5.2 m
Q16

Which of the following statement is or are correct?

[A]. We are able to walk on ground because friction between the sole of our shoes and ground prevents us from slipping over the ground.
[B]. Walking on slippery ground is difficult because the frictional force on slippery ground is much less which may not be sufficient to prevent us from sleeping.
[C]. When we accidentally step on a banana peel thrown on the road, we usually slip and fall down.
[D]. All the above.
Q17

A body shape which offers very little resistance to the flow of air (or water) around it is called:

[A]. Trimlined shape
[B]. Steamlined shape
[C]. Streaklined shape
[D]. Streamlined shape
Q18

Consider the following statements and choose the incorrect one:

[A]. The burning of a matchstick would not be possible without friction.
[B]. We are able to cut wood because there is friction between the saw blade and log of wood.
[C]. We can hold a glass tumbler in our hands because of friction between the glass tumbler and our hands.
[D]. None of the above
Q19

In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

[A]. Nails and screws are also held in wood by friction.
[B]. Friction enables knot to be tied in strings or ropes etc.
[C]. Friction enables a person to climb a tree or pole.
[D]. Friction does not help a ladder to be leaned against the wall.
Q20

Which of the following does not have a streamlined shape?

[A]. Aeroplane
[B]. Boat
[C]. Bird
[D]. Bus
Q21

A person has applied some mustard oil on his hands. Which of the following objects will become most difficult for him to hold in his hand?

[A]. Earthen cup (kulhar)
[B]. Thermocol tumbler
[C]. Glass tumbler
[D]. Wooden cup
Q22

Bikash is doing his homework which is given by his teacher. Would you help him to choose the correct sentences?

[A]. The pencil cell travels the least distance on the towel.
[B]. The pencil cell travels a larger distance on the wet marble floor.
[C]. The pencil cell travels less distance on the newspaper sheet then the dry marble floor.
[D]. All the above.
Q23

Consider the following statements and choose the correct one:

[A]. The fluid friction can be reduced or minimized by giving special shape called “streamlined shape”.
[B]. An aeroplane has a streamlined shape to reduces air friction that it encounters when flying at high speed through the sky.
[C]. The rockets are also built with streamlined shapes so that they encounter the minimum air resistance or drag due to air.
[D]. All the above.
Q24

Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?

[A]. The force of friction acts in the direction opposite to the direction of motion of an object.
[B]. When the motion of the book is towards right side then the force of friction acts on it towards the left side.
[C]. Friction is caused by the interlocking of irregularities in the surfaces of the two objects which are in contact with each other.
[D]. All the above
Q25

Ball bearing is a device which usually converts:

[A]. Rolling friction into sliding friction
[B]. Static friction into sliding friction
[C]. Sliding friction into rolling friction
[D]. Rolling friction into static friction

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Why MCQs are important?

According to CBSE latest pattern of question papers, in every subject MCQ with four options will be asked. These MCQ help to revise the chapter as well as provide a perfect way for quick revision.

Last Edited: June 12, 2023