Here we are providing Class 8 Science Objective Chapter – 11 Force and Pressure because its very important for Class 8 students as we all know that every board exam question has MCQs so that students should practice these questions so that students can get good marks in board. Class 8 Science Objective Chapter – 11 Force and Pressure is an extremely important and its also a year in which students learn the fundamentals of concepts that help them lay a solid foundation for their higher education. Here we are providing in Class Class 8 Science Objective Chapter – 11 Force and Pressure Wastewater Story 100+ questions so that students practice more and more. If you want class wise Notes Then Click Here
Class 8 Science Objective Chapter – 11 Force and Pressure
1.The pressure which is exerted by air around us is known as
( A ) force
( B ) atmospheric pressure
( C ) muscular force
( D ) friction
Ans – ( B )
2.When a given force is applied on larger area of contact the pressure exerted by it:
( A ) increases
( B ) decreases
( C ) does not change
( D ) none of these
Ans – ( B )
3.Force acting on per unit area is called
( A ) non-contact forces
( B ) contact forces
( C ) force
( D ) pressure
Ans – ( D )
4.The pressure exerted by a liquid:
( A ) decreases with depth
( B ) does not change with depth
( C ) increases with depth
( D ) is different in different directions at he same depth
Ans – ( C )
5.A ___________ exerted by an object on another is a force.
( A ) Push or pull
( B ) Contact or non-contact force
( C ) Pressure
( D ) Magnitude
Ans – ( A )
6.A force can:
( A ) change the state of motion
( B ) change the shape of an object
( C ) change the direction of motion of an object
( D ) all of these
Ans – ( D )
7.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
Ans – ( B )
8.Force is:
( A ) only push on an object
( B ) only pull on an object
( C ) either push or pull on an object
( D ) none of these
Ans – ( C )
9.Muscular force is also called ___________ force.
( A ) non-contact
( B ) contact
( C ) gravitational
( D ) magnetic
Ans – ( B )
10.Liquids exert pressure on the walls of the container:
( A ) yes
( B ) no
( C ) can’t say
( D ) none of these
Ans – ( A )
11.The force exerted by a charged body on another char
( A ) gravitational force
( B ) electrostatic force
( C ) non-contact force
( D ) contact force
Ans – ( B )
12.The pressure exerted by the air is known as:
( A ) air pressure
( B ) gas pressure
( C ) atmospheric pressure
( D ) none of these
Ans – ( C )
13.Force changes the
( A ) motion of body
( B ) speed of body
( C ) shape of body
( D ) all of these
Ans – ( D )
14.When a rubber sucker is pressed on a plane surface than it sticks to the surface because of :
( A ) the pressure exerted by us
( B ) the air sucked by rubber
( C ) the pressure of atmosphere acting on it
( D ) none of these
Ans – ( C )
15.The force exerted by our muscle is called
( A ) electrostatic force
( B ) muscular force
( C ) gravitational force
( D ) non-contact force
Ans – ( B )
16.The instrument used of measure atmospheric pressure is:
( A ) mercury barometer
( B ) manometer
( C ) pressure meter
( D ) none of these
Ans – ( A )
17.1 kilogram weight is equal to
( A ) 98 N
( B ) 9.8 N
( C ) 0.98 N
( D ) 0.098 N
Ans – ( B )
18.The force exerted on a normal human being due to atmospheric pressure is:
( A ) 2 x 104N
( B ) 2 x 105N
( C ) 2 x 106N
( D ) none of these
Ans – ( A )
19.A spring balance is used for measuring
( A ) mass
( B ) weight
( C ) pressure
( D ) speed
Ans – ( B )
20.The weight of air that every square centimetre of any surface carries is:
( A ) 1 kg
( B ) 10 kg
( C ) 1 gm
( D ) 100 kg
Ans – ( A )
21.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.
Ans – ( B )
22.When bicycle tube is punctured than:
( A ) it bursts
( B ) air escapes very fast
( C ) air escapes slowly
( D ) none of these
Ans – ( C )
23.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
Ans – ( B )
24.We are not crushed under the weight of air because:
( A ) air has no weight
( B ) the pressure inside our bodies is equal to atmospheric pressure
( C ) the pressure inside our bodies is more than atmospheric pressure
( D ) none of these
Ans – ( B )
25.The strength of force is expressed by its
( A ) weight
( B ) mass
( C ) magnitude
( D ) longitudinal force
Ans – ( C )
26.Leaves fall down on the ground due to
( A ) electrostatic force
( B ) magnetic force
( C ) gravitational force
( D ) muscular force
Ans – ( C )
27.The non-contact force is:
( A ) magnetic force
( B ) electrostatic force
( C ) force of gravity
( D ) all of these
Ans – ( D )
28.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
Ans – ( C )
29.A boat comes to rest if we stop rowing it due to:
( A ) gravitation force
( B ) force of friction
( C ) muscular force
( D ) none of these
Ans – ( B )
30.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
Ans – ( C )
31.A football moves when we:
(a)pushit
( B ) hit it
( C ) kick it
( D ) all of these
Ans – ( D )
32.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
Ans – ( C )
33.Which of the following is contact force:
( A ) force of gravity
( B ) magnetic force
( C ) force of friction
( D ) electrostatic force
Ans – ( C )
34.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
Ans – ( D )
35.Pressure =
( A ) force/area
( B ) force x area
( C ) area/force
( D ) none of these
Ans – ( A )
36.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
Ans – ( D )
37.Knives, needles, saws are made sharp or pointed to:
( A ) decrease pressure
( B ) can’t say
( C ) increase pressure
( D ) none of these
Ans – ( C )
38.Which one of the following forces is a contact force?
( A ) Force of gravity
( B ) Magnetic force
( C ) Force of friction
( D ) Electrostatic force
Ans – ( C )
39.The pressure with the height of the liquid column.
( A ) increase
( B ) remains same
( C ) decrease
( D ) none of these
Ans – ( A )
40.A exerted by an object on another is a force.
( A ) Push or pull
( B ) Contact or non-contact force
( C ) Pressure
( D ) Magnitude
Ans – ( A )
41.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
( B ) maximum in position C
( C ) maximum in position B
( D ) equal in all cases
Ans – ( B )
42.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
Ans – ( B )
43.A push or pull on an object is called
( A ) Pressure
( B ) Push-pull
( C ) Force
( D ) All of the above
Ans – ( C )
44.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.
Ans – ( B )
45.If two forces act in the opposite directions on an object, the net force acting on it is the
( A ) Sum of the two forces
( B ) difference between the two forces
( C ) Multiplication of the two forces
( D ) Division of the two forces
Ans – ( B )
46.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
Ans – ( B )
47.Which of the following is proper example(s) to explain that force on an object may change its shape
( A ) A ball of dough rolled into chapati
( B ) Pressing a rubber ball kept on table
( C ) Making model using clay
( D ) All of the above
Ans – ( D )
48.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
( B ) broader feet
( C ) smaller feet
( D ) heavier body
Ans – ( B )
49.A ball rolling on the ground slows down and finally stops. This is because of
( A ) Force
( B ) Less force applied
( C ) Friction
( D ) None of the above
Ans – ( C )
50.Which force always opposes motion?
( A ) Magnetic force
( B ) Electrostatic force
( C ) Frictional force
( D ) Muscular force
Ans – ( C )
51.Force of friction always acts on moving objects and its direction shall be ____
( A ) On any direction
( B ) Along the direction of motion
( C ) Perpendicular to the direction of motion
( D ) Opposite to the direction of motion
Ans – ( C )
52.Which of the following exerts gravitational force?
( A ) Earth
( B ) Venus
( C ) Saturn
( D ) All of the above
Ans – ( D )
53.If In a tug-o-war, when two teams are pulling a rope, and the rope does not move towards any team, it implies that
( A ) Equal force is being applied in the same direction
( B ) Equal Force is being applied in opposite direction
( C ) No force is applied in any direction
( D ) Cannot be explained
Ans – ( B )
54.Which force causes a charged balloon to attract another balloon?
( A ) Muscular force
( B ) Electrostatic force
( C ) Magnetic force
( D ) Gravitational force
Ans – ( B )
55.An example of a non- contact force is
( A ) Force exerted by us to lift a bucket
( B ) Push a stationary car
( C ) Force exerted by magnet
( D ) Hit a cricket ball for a 6 run
Ans – ( C )
56.What is the SI unit of force?
( A ) Newton
( B ) Galileo
( C ) Einstein
( D ) Pascal
Ans – ( A )
57.Pressure =
( A ) Area / force on which it acts
( B ) force / area on which it acts
( C ) Volume / force on which it acts
( D ) Force / volume on which it acts
Ans – ( B )
58.As we go to the higher altitudes, the atmospheric pressure
( A ) increases
( B ) decreases
( C ) remains the same
( D ) cannot say
Ans – ( B )
59.Gravity is
( A ) Repulsive
( B ) Attraction + Repulsive force
( C ) Attractive force
( D ) Not a force
Ans – ( C )
60.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
Ans – ( B )
61.A batsman hits the ball for a boundary past the bowler i.e. four runs. The batsman thus
( A ) Changes the direction & speed of the ball
( B ) Does not change the direction but speed only
( C ) Does not change the speed but direction only
( D ) Does not change either direction or speed
Ans – ( A )
