 Class 8 Science Chapter 8 MCQ (Multiple Choice Questions) of Force and Pressure for CBSE and State boards like UP board, MP board and other board who are following NCERT books for session 2023-24. All the questions are taken from latest NCERT books issued for new academic session. Practice with these questions to clear all of your doubts and to be confident in exams. Class 8 science chapter 8 MCQs covers the entire chapter and all the topics with suitable answers and explanation.

## Class 8 Science Chapter 8 MCQ

 Class: 8 Science Chapter: 8 Force and Pressure Contents: MCQ Online Test with answers Session: 2023-24

### MCQ Tests with Answers for Class 8 Science Chapter 8

Q1

#### Which of the following is not an example of muscular force?

[A]. A porter carrying a load on a wheel-barrow.
[B]. An apple falling from a tree.
[C]. A child riding a bicycle.
[D]. A person drawing water from a well.
Q2

#### Two boys A (left side) and B (right side) are applying force on a block. If the block moves towards the right, which one of the following statements is correct?

[A]. Magnitude of force applied by A is greater than that of B.
[B]. Magnitude of force applied by A is smaller than that of B.
[C]. Net force on the block is towards A.
[D]. Magnitude of force applied by A is equal to that of B.
Q3

#### When we press the bulb of a dropper with its nozzle kept in water air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to:

[A]. Pressure of water
[B]. Gravity of the earth
[C]. Shape of rubber bulb
[D]. Atmospheric pressure
Q4

#### During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is:

[A]. Force of gravity.
[B]. Electrostatic force.
[C]. Force of friction.
[D]. Magnetic force.
Q5

#### A rectangular wooden block has length, breadth and height of 50 cm, 25 cm and10 cm, respectively. This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground?

[A]. The maximum pressure is exerted when the length and breadth form the base
[B]. The maximum pressure is exerted when length and height form the base
[C]. The maximum pressure is exerted when breadth and height form the base
[D]. The minimum pressure is exerted when length and height form the base
Q6

#### Which of the following are contact forces?

[A]. Friction and Gravitational force
[B]. Gravitational force and Magnetic force
[C]. Friction and Muscular force
[D]. Gravitational force and Muscular force
Q7

#### If we release a magnet held in our hand, it falls to the ground. The force responsible for this is:

[A]. Muscular force
[B]. Magnetic force
[C]. Electrostatic force
[D]. Gravitational force
Q8

#### A brick is kept in three different ways with the help of V, L, O shapes on a table. The pressure exerted by the brick on the table will be

[A]. Maximum in position V
[B]. Maximum in position O
[C]. Maximum in position L
[D]. Equal in all cases.
Q9

#### Which of the following force is utilized in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of chimneys of factories?

[A]. Magnetic force
[B]. Gravitational force
[C]. Electrostatic force
[D]. Frictional force
Q10

#### Which of the following statement is or are incorrect?

[A]. A push or pull on an object is called force.
[B]. When we push the door to open it, then we apply a force on the door in certain direction.
[C]. An interaction of an object with another object results in a force between the two objects.
[D]. All the above
Q11

#### A force can produce many effects. Choose the correct statements:

[A]. A force can change the speed of a moving object.
[B]. A force can change the direction of a moving object.
[C]. A force can change the shape and size of an object.
[D]. All the above
Q12

#### Which of the following does not work on the existence of atmospheric pressure?

[A]. Rise of iodine solution in the glass tube of dropper
[B]. Rise of cold drink in a long plastic straw
[C]. Sticking of suction hook on the wall of a room
[D]. Rise of mercury in glass tube of thermometer
Q13

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

[A]. The force exerted by the muscles of the body is called muscular force.
[B]. The force which always opposes the motion of one body is called friction force.
[C]. A force which can be exerted by an object on another object on this through physical touching is called contact forces.
[D]. All the above
Q14

[A]. Pascal
[B]. Kelvin
[C]. Newton
[D]. Magdeburg
Q15

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

[A]. The pull exerted by objects possessing mass is called gravitational force.
[B]. The force exerted by an electrically charged object is called electrostatic force.
[C]. The drinking straw works on the existence of atmospheric pressure.
[D]. None of the above
Q16

#### Payal is completed her science chapter where she wrote some statements. She wants to know whether the statements are correct or not? Payel wants to take help from you:

[A]. Pressure is produced when a force acts on an object.
[B]. The force with which the earth pulls the objects towards it, is called the force of gravity.
[C]. The gravitational force between the sun and the earth which holds the earth in its orbit around the sun.
[D]. None of the above.
Q17

#### Which of the following is not a non-contact force?

[A]. Electrostatic force
[B]. Gravitational force
[C]. Frictional force
[D]. Magnetic force
Q18

[A]. 25 N/m2
[B]. 50 N/m2
[C]. 100 N/m2
[D]. 147 N/m2
Q19

[A]. Einstein
[B]. James Watt
[D]. Newton
Q20

#### Boojho appeared in class test but he confused to know the incorrect statement. Would you help him to know that?

[A]. Nose bleeding take place at high altitude.
[B]. At high altitude, the atmospheric pressure becomes much less than our blood pressure.
[C]. At atmospheric pressure acting on our body from outside is balanced by the blood pressure from inside.
[D]. None of the above
Q21

#### A blunt knife does not cut an object easily because:

[A]. Thicker edge produces lesser pressure.
[B]. The thicker edge does not transfer the force.
[C]. It can be used to cut the butter
[D]. The weight of knife controlled by object
Q22

#### The magnitude of atmospheric pressure is equal to the pressure exerted by a:

[A]. 76 mm tall column of mercury
[B]. 760 mm tall column of alcohol
[C]. 76 cm tall column of mercury
[D]. 760 cm tall column of mercury
Q23

#### The atmospheric pressure is usually measured in the unit of:

[A]. Newtons per square meter
[B]. Pascal
[C]. Cm of mercury
[D]. Mm of mercury
Q24

#### In the last year board examination, Rahul were asked a question where he had to choose the statement which was/were correct? Will you be able to answer this question?

[A]. The drinking straw works on the existence of atmospheric pressure.
[B]. The syringe works on the existence of atmospheric pressure.
[C]. A dropper works on the existence of atmospheric pressure.
[D]. All the above
Q25

#### When a force of 5 N acts on a surface, it produces a pressure of 500 Pa. The area of surface then must be

[A]. 10 cm2
[B]. 50 cm2
[C]. 100 cm2
[D]. 0.01 cm 2
###### How to prepare chapter 8 of Class 8 Science?

Just read the complete chapter from NCERT Textbook and go through the exercise questions answers given at the end of the chapter of NCERT book. Now work on important questions and MCQ questions to learn thoroughly the entire chapter 8 of class 8 Science.

Last Edited: June 12, 2023