Updated by Tiwari Academy
on June 12, 2023, 8:47 AM
on June 12, 2023, 8:47 AM
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: 8 | Science |
| Chapter: 9 | Friction |
| Contents: | MCQ Online Tests |
| Session: | 2024-25 |
MCQ Tests with Answers for Class 8 Science Chapter 9
Q1
A boy runs his toy car on dry marble floor, wet marble floor, newspaper and towel spread on the floor. The force of friction acting on the car on different surfaces in increasing order will be:
[A]. Wet marble floor, Dry marble floor, Newspaper, Towel
[B]. Newspaper, Towel, Dry marble floor, Wet marble floor
[C]. Towel, Newspaper, Dry marble floor, Wet marble floor
[D]. Wet marble floor, Dry marble floor, Towel, Newspaper
Q2
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
Q3
A big wooden box is being pushed on the ground from east to west direction. The force of friction due to ground will act on this box towards:
[A]. North direction
[B]. South direction
[C]. East direction
[D]. West direction
Q4
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
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
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
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
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.
Q13
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
Q14
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.
Q15
The weight of an object can be measured by a:
[A]. Beam balance
[B]. Analytical balance
[C]. Spring balance
[D]. Physical balance
Q16
A book is lying on the horizontal table top. If we till the table, then the book starts sliding down slowly. This happens because:
[A]. Sliding friction is greater than static friction
[B]. Sliding friction is less than force of gravity
[C]. Static friction is greater than sliding friction
[D]. Force of gravity is less than sliding friction
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
Which of the following should be used to reduce friction on a carrom board?
[A]. A lubricating oil
[B]. A dry lubricant
[C]. A layer of grease
[D]. A ball bearing
Q20
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.
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
Which of the statements is or are correct about “Friction”?
[A]. Friction force can only slow things down
[B]. Friction is force that only occurs when an object moves.
[C]. Friction is force that only occurs on rough surfaces.
[D]. Friction is force that only occurs between solids
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
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.
Q25
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
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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
