Class 8 Science Chapter 9 MCQ (Multiple Choice Questions) of Friction updated for academic session 2023-24 CBSE and state board students free to use. All the contents are prepared from latest NCERT Textbooks issued for session 2023-24. 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:2023-24

MCQ Tests with Answers for Class 8 Science Chapter 9

Q1

Four children were asked to arrange forces due to rolling, static and sliding friction in a decreasing order. The correct arrangement is:

[A]. Rolling, Static, Sliding
[B]. Rolling, Sliding, Static
[C]. Static, Sliding, Rolling
[D]. Sliding, Static, Rolling
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

Which of the following statements is incorrect?

[A]. Friction acts on a ball rolling along the ground.
[B]. Friction acts on a boat moving on water
[C]. Friction acts on a bicycle moving on a smooth road.
[D]. Friction does not act on a ball moving through air.
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

In a large commercial complex, there are four ways to reach the main road. One of the path has loose soil, the second is laid with polished marble, the third is laid with bricks and the fourth has gravel surface. It is raining heavily and Paheli wishes to reach the main road. The path on which she is least likely to slip is:

[A]. Loose soil
[B]. Polished marble
[C]. Bricks
[D]. Gravel
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

Priya is writing some statements, choose the correct statement and help her:

[A]. Higher speed of an object moving through a fluid, greater will be the frictional force. Acting on it.
[B]. Larger the size of an object moving through a fluid, greater will be the frictional force acting on it.
[C]. Higher the viscosity or thickness of fluid, greater will be the frictional force or drag acting on an object moving through it.
[D]. All the above.
Q12

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
Q13

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.
Q14

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
Q15

Read the following sentences carefully, and choose the incorrect one:

[A]. Grooves are made in the soles of shoes to increase friction and prevent slipping.
[B]. Spikes are provided in the shoes of player and athletes to increase friction and prevent slipping.
[C]. Machines belts are made of special materials to increase friction and drive machines wheels properly.
[D]. None of the above.
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

In a science quiz competition, Payel is asked a question where she had to choose the statement which was/were incorrect?

[A]. The brakes of a car and bicycle work by friction.
[B]. The friction between brake pad and rim prevents the wheel from moving ahead.
[C]. If there were no friction, then once a vehicle started moving it would never stop.
[D]. None of the above
Q18

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
Q19

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
Q20

Which of the following does not have a streamlined shape?

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

Read the following sentences carefully, and choose the correct one:

[A]. We are able to fix nails in a wall due to friction.
[B]. Friction enables the belts to drive machine in factories
[C]. Friction helps in the construction of buildings.
[D]. All the above.
Q22

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.
Q23

Final examination in the last year, Rahul were asked a question where he had to choose the statement which was/were incorrect? Will you be able to answer this question?

[A]. When the oil is poured the marble floor, it decreases the irregularities.
[B]. When an object is pulled by a spring it decreases the friction.
[C]. Wrapping of polythene sheet makes the surface of bricks smooth due to which the friction with floor decreases
[D]. Wrapping of jute clothes make the surface of brick more-rough due to which the friction with floor decreases.
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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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