Class 8 Science Chapter 11 MCQs Questions With Answers NCERT
We have compiled the NCERT MCQ Questions for Class 8 Science Chapter 11 Force and Pressure with Answers Pdf free download covering the entire syllabus. Practice MCQ Questions for Class 8 Science with Answers on a daily basis and score well in exams. Refer to the Force and Pressure Class 8 MCQs Questions with Answers here along with a detailed explanation.
Force and Pressure Class 8 MCQ
Choose the correct option.
Question 1.
The pressure which is exerted by air around us is known as
(a) force
(b) atmospheric pressure
(c) muscular force
(d) friction
Answer
Answer: (b) atmospheric pressure
Question 2.
Force acting on per unit area is called
(a) non-contact forces
(b) contact forces
(c) force
(d) pressure
Answer
Answer: (d) pressure
Question 3.
A exerted by an object on another is a force.
(a) Push or pull
(b) Contact or non-contact force
(c) Pressure
(d) Magnitude
Answer
Answer: (a) Push or pull
Question 4.
The force exerted by the earth to pull the object towards itself is called
(a) electrostatic force
(b) gravitational force
(c) muscular force
(d) contact force
Answer
Answer: (b) gravitational force
Question 5.
Muscular force is also called __________ force.
(a) non-contact
(b) contact
(c) gravitational
(d) magnetic
Answer
Answer: (b) contact
Question 6.
The force exerted by a charged body on another charged or uncharged body is called
(a) gravitational force
(b) electrostatic force
(c) non-contact force
(d) contact force
Answer
Answer: (b) electrostatic force
Question 7.
Force changes the
(a) motion of body
(b) speed of body
(c) shape of body
(d) all of these
Answer
Answer: (d) all of these
Question 8.
The force exerted by our muscle is called
(a) electrostatic force
(b) muscular force
(c) gravitational force
(d) non-contact force
Answer
Answer: (b) muscular force
Question 9.
1 kilogram weight is equal to
(a) 98 N
(b) 9.8 N
(c) 0.98 N
(d) 0.098 N
Answer
Answer: (b) 9.8 N
Question 10.
A spring balance is used for measuring
(a) mass
(b) weight
(c) pressure
(d) speed
Answer
Answer: (b) weight
Question 11.
Two boys A and B are applying force on a block. If the block moves towards the boy A, 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 B.
(d) Magnitude of force applied by A is equal to that of B.
Answer
Answer: (b) Magnitude of force applied by A is smaller than that of B.
Question 12.
When two forées act in opposite directions, then net force acting is the
(a) sum of two forces
(b) difference between two forces
(c) both of these
(d) none of these
Answer
Answer: (b) difference between two forces
Question 13.
The strength of force is expressed by its
(a) weight
(b) mass
(c) magnitude
(d) longitudinal force
Answer
Answer: (c) magnitude
Question 14.
Leaves fall down on the ground due to
(a) electrostatic force
(b) magnetic force
(c) gravitational force
(d) muscular force
Answer
Answer: (c) gravitational force
Question 15.
State of motion is described by
(a) Position of rest
(b) Position of motion
(c) Both by the state of rest or motion
(d) None of these
Answer
Answer: (c) Both by the state of rest or motion
Question 16.
When the hammer strikes the gong of an electric bell, which of the following force is responsible for the movement of hammer?
(a) Gravitational force alone
(b) Magnetic force alone
(c) Electrostatic force alone
(d) Frictional force alone
Answer
Answer: (c) Electrostatic force alone
Question 17.
During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is
(a) force of gravity
(b) force of friction
(c) electrostatic force
(d) magnetic force
Answer
Answer: (c) electrostatic force
Question 18.
A container is filled with water as shown in the given figure. Which of the following statements is correct about pressure of water?
(a) Pressure at A > Pressure at B > Pressure at C
(b) Pressure at A = Pressure at B = Pressure at C
(c) Pressure at A < Pressure at B > Pressure at C
(d) Pressure at A < Pressure at B < Pressure at C
Answer
Answer: (d) Pressure at A < Pressure at B < Pressure at C
Question 19.
Two objects repel each other. This repulsion could be due to
(a) frictional force only
(b) electrostatic force only
(c) magnetic force only
(d) either a magnetic or an electrostatic force
Answer
Answer: (d) either a magnetic or an electrostatic force
Question 20.
Which one of the following forces is a contact force?
(a) Force of gravity
(b) Magnetic force
(c) Force of friction
(d) Electrostatic force
Answer
Answer: (c) Force of friction
Question 21.
A brick is kept in three different ways on a table as shown in given figure. The pressure exerted by the brick on the table will be
(a) maximum in position A
(c) maximum in position B
(b) maximum in position C
(d) equal in all cases
Answer
Answer: (a) maximum in position A
Question 22.
Which force is being applied by a vendor when he is pushing the pushcart?
(a) Muscular force
(b) Magnetic force
(c) Frictional force
(d) Electrostatic force
Answer
Answer: (a) Muscular force
Question 23.
Which force always opposes motion?
(a) Magnetic force
(b) Electrostatic force
(c) Frictional force
(d) Muscular force
Answer
Answer: (c) Frictional force
Question 24.
Which of the following exerts gravitational force?
(a) Earth
(b) Venus
(c) Saturn
(d) All of the above
Answer
Answer: (d) All of the above
Question 25.
Which force causes a charged balloon to attract another balloon?
(a) Muscular force
(b) Electrostatic force
(c) Magnetic force
(d) Gravitational force
Answer
Answer: (b) Electrostatic force
Question 26.
What is the SI unit of force?
(a) Newton
(b) Galileo
(c) Einstein
(d) Pascal
Answer
Answer: (a) Newton
Question 27.
As we go to the higher altitudes, the atmospheric pressure
(a) increases
(b) decreases
(c) remains the same
(d) cannot say
Answer
Answer: (b) decreases
Question 28.
The pressure of the water at the bottom of the pond is than at the surface.
(a) lower
(b) higher
(c) same
(d) either lower or higher
Answer
Answer: (b) higher
Question 29.
A body is said to be under balanced forces when the resultant of all the forces applied is
(a) one
(b) zero
(c) infinite
(d) none of these
Answer
Answer: (b) zero
Question 30.
Opening a door is an example of a
(a) contact force
(b) non-contact force
(c) muscular force
(d) both (a) and (c)
Answer
Answer: (d) both (a) and (c)
Question 31.
What is the cause of change in the state of motion of an object?
(a) Pressure
(b) Atmospheric pressure
(c) Friction
(d) Force
Answer
Answer: (d) Force
Fill in the Blanks
Question 1.
We ………………. the bucket to take out water from well.
Answer
Answer: pull
Question 2.
The strength of a force is usually expressed by its ……………….
Answer
Answer: magnitude
Question 3.
………………. force is the force resulting due to the action of muscles.
Answer
Answer: Muscular
Question 4.
The envelop of air all around us is called ……………….
Answer
Answer: atmosphere
Question 5.
To open a door we or ………………. the door.
Answer
Answer: push, pull
Question 6.
Force of friction is an example of ………………. force.
Answer
Answer: contact
Question 7.
Force ………………. is called pressure.
Answer
Answer: per unit area
Question 8.
Force has ………………. as well as direction.
Answer
Answer: magnitude
Question 9.
Fruits fall ………………. due to the force of gravity.
Answer
Answer: downward
Question 10.
The body at rest is called ………………. body.
Answer
Answer: stationary
Question 11.
………………. and ………………. forces are the two kinds of forces.
Answer
Answer: Contact, non-contact
Question 12.
Force exerted by magnet is called ………………. force.
Answer
Answer: magnetic
Question 13.
We apply force on ………………. while walking.
Answer
Answer: ground
Question 14.
Force is ………………. to pressure.
Answer
Answer: directly proportional
Question 15.
The ………………. is measured by an instrument called barometer.
Answer
Answer: atmospheric pressure
Question 16.
Force acting on a body can change its ……………………. and state of motion.
Answer
Answer: shape
Question 17.
The wear and tear in the machine parts is due to …………………….
Answer
Answer: friction
Question 18.
A force arises due to ……………………. between two objects.
Answer
Answer: interaction
Question 19.
The pressure exerted by a liquid ……………………. with depth.
Answer
Answer: increases
Question 20.
Like poles of a magnet ……………………. each other.
Answer
Answer: repel
Question 21.
A drinking straw works on the principle of ……………………. pressure.
Answer
Answer: atmospheric
True or False
Question 1.
Force applied on an object in opposite directions add to one another.
Answer
Answer: False
Question 2.
Pressure does not depend on area of contact.
Answer
Answer: False
Question 3.
A force can change the state of motion of an object.
Answer
Answer: True
Question 4.
Force cannot change the speed of an object.
Answer
Answer: False
Question 5.
Atmospheric pressure is less at higher altitudes.
Answer
Answer: True
Question 6.
Force of gravity is a contact force.
Answer
Answer: False
Question 7.
Muscular force is also known as contact force.
Answer
Answer: True
Question 8.
Pascal is the unit of force.
Answer
Answer: False
Question 9.
To move an object faster it has to be pushed or pulled repeatedly.
Answer
Answer: True
Question 10.
Magnitude is the strength of force.
Answer
Answer: True
Question 11.
Force can change the shape of an object.
Answer
Answer: True
Question 12.
At least two objects must interact for a force to come into play.
Answer
Answer: True
Question 13.
Magnetic force is a non-contact force.
Answer
Answer: True
Question 14.
An apple from a tree falls on the ground due to the force of gravity.
Answer
Answer: True
Question 15.
Newton is the unit of force.
Answer
Answer: True
Question 16.
Fluids exert pressure on the walls of their container.
Answer
Answer: True
Question 17.
A piece of rubber regains its shape when force is removed.
Answer
Answer: True
Question 18.
Cutting and piercing tools have blunt edges.
Answer
Answer: False
Question 19.
Camel cannot walk on sand due to its broad feet.
Answer
Answer: False
Question 20.
Non-contact force can act from a distance.
Answer
Answer: True
Question 21.
The syringe works on the principle of atmospheric pressure.
Answer
Answer: True
Question 22.
People in plains suffer from nose bleeding.
Answer
Answer: False
Question 23.
Electrostatic force is a contact force.
Answer
Answer: False
Question 24.
Air resistance opposes motion of objects through the air.
Answer
Answer: True
Question 25.
The SI unit of pressure is newton.
Answer
Answer: False
Match the following
| Column I | Column II |
| 1. Pressure | (a) Fluid pressure |
| 2. Barometer | (b) Unit of pressure |
| 3. Newton | (c) Non-contact force |
| 4. Manometer | (d) Force/Area |
| 5. Pascal | (e) Unit of force |
| 6. Magnetic force | (f) Net force acting on a body |
| 7. 1 kilogram | (g) Atmospheric pressure |
| 8. Resultant force | (h) 9.8 N |
| 9. Frictional force | (i) Down the column |
| 10. Pressure increases | (j) Contact force |
Answer
Answer:
| Column I | Column II |
| 1. Pressure | (d) Force/Area |
| 2. Barometer | (g) Atmospheric pressure |
| 3. Newton | (e) Unit of force |
| 4. Manometer | (a) Fluid pressure |
| 5. Pascal | (b) Unit of pressure |
| 6. Magnetic force | (c) Non-contact force |
| 7. 1 kilogram | (h) 9.8 N |
| 8. Resultant force | (f) Net force acting on a body |
| 9. Frictional force | (j) Contact force |
| 10. Pressure increases | (i) Down the column |
| Column A | Column B |
| 1. Gravity | (a) Muscular force |
| 2. Frictional force | (b) Pascal |
| 3. Pressure | (c) Strength of force |
| 4. Magnitude | (d) Earth |
| 5. Contact force | (e) Contact force |
Answer
Answer:
| Column A | Column B |
| 1. Gravity | (d) Earth |
| 2. Frictional force | (e) Contact force |
| 3. Pressure | (b) Pascal |
| 4. Magnitude | (c) Strength of force |
| 5. Contact force | (a) Muscular force |
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