# MCQ Questions for Class 8 Science Chapter 11 Force and Pressure with Answers

MCQ Questions for Class 8 Science Chapter 11 : NCERT CBSE RBSE other Board MCQ Questions for Class 8 Science Chapter 11 Force and Pressure with Answers Pdf free download. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern.

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## MCQ Questions for Class 8 Science Chapter 11 Force and Pressure with Answers

Question 1.
The pressure which is exerted by air around us is known as
(a) force
(b) atmospheric pressure
(c) muscular force
(d) friction

Question 2.
Force acting on per unit area is called
(a) non-contact forces
(b) contact forces
(c) force
(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

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

Question 5.
Muscular force is also called ___________ force.
(a) non-contact
(b) contact
(c) gravitational
(d) magnetic

Question 6.
The force exerted by a charged body on another char
(a) gravitational force
(b) electrostatic force
(c) non-contact force
(d) contact force

Question 7.
Force changes the
(a) motion of body
(b) speed of body
(c) shape of body
(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

Question 9.
1 kilogram weight is equal to
(a) 98 N
(b) 9.8 N
(c) 0.98 N
(d) 0.098 N

Question 10.
A spring balance is used for measuring
(a) mass
(b) weight
(c) pressure
(d) speed

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: (b) Magnitude of force applied by A is smaller than that of B.

Question 12.
When two forces 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: (b) difference between two forces

Question 13.
The strength of force is expressed by its
(a) weight
(b) mass
(c) magnitude
(d) longitudinal force

Question 14.
Leaves fall down on the ground due to
(a) electrostatic force
(b) magnetic force
(c) gravitational force
(d) muscular 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: (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

Question 17.
During dry weather, while combing hair, sometimes we experience hair flying apart. The force respon¬sible for this is
(a) force of gravity
(b) force of friction
(c) electrostatic force
(d) magnetic force

Question 18.
Pressure =
(a) force/area
(b) force x area
(c) area/force
(d) none of these

(a) force/area
Pressure is force/area.

Question 19.
Knives, needles, saws are made sharp or pointed to:
(a) decrease pressure
(b) can’t say
(c) increase pressure
(d) none of these

(c) increase pressure
Knives, needles, saws are made sharp or pointed to increase pressure because decreasing area of contact increases pressure.

Question 20.
The pressure with the height of the liquid column.
(a) increase
(b) remains same
(c) decrease
(d) none of these

(a) increase
The pressure increases with the height of the liquid column.

Question 21.
By decreasing the contact area the pressure:
(a) is decreased
(b) remain same
(c) is increased
(d) none of these

(c) is increased
By decreasing the contact area the pressure is increased.

Question 22.
The unit of pressure is:
(a) Newton
(b) Newton/metres
(c) Newton metres
(d) Newton/metre

(b) Newton/metres
The unit of pressure is Newton/metres.

Question 23.
The instrument used to measure pressure of liquids is:
(a) barometer
(b) manometer
(c) pressure meter
(d) none of these

(b) manometer
The instrument used to measure pressure of liquids is manometer.

Question 24.
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

(d) atmospheric pressure
Atmospheric pressure.

Question 25.
Pushing a rock from a hill top is an example of:
(a) muscular force
(b) magnetic force
(c) frictional force
(d) electrostatic force

(a) muscular force
Pushing a rock from a hill top is an example of muscular force.

Question 26.
Under which condition can a moving object charge its direction:
(a) by reducing friction
(b) by increasing friction
(c) by applying force
(d) by not applying force

(c) by applying force
By applying force, a moving object can change its direction.

Question 27.
A stone thrown with a catapult (Gulal) falls back on the ground because :
(a) the muscles apply force
(b) the stone applies force
(c) the earth exerts force
(d) the catapult exerts force

(c) the earth exerts force
A stone thrown with a catapult (Gulal) falls back on the ground because the earth exerts force on it

Question 28.
The SI unit of force is:
(a) kilogram
(b) gram
(c) newton
(d) none of these

(c) newton
The SI unit of force is Newton.

Question 29.
A man walking on the street slips on a banana skin because:
(a) it is sticky
(b) his foot crushes it
(c) at that point there is very little friction
(d) all of these.

(c) at that point there is very little friction
A man walking on the street slips on a banana skin because at that point there is very little friction between his shoe and the ground.

Question 30.
between his shoe and the ground In desert areas, a camel can walk very easily as compared to horse because it has:
(a) lesser weight
(c) smaller feet
(d) heavier body

Broader feet exerts lesser pressure therefore in desert areas, a camel can walk very easily as compared to horse.

Match the Column-A with Column-B:

Question 1.