## Class 8 Science Objective Chapter – 11 Force and Pressure

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

( 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 )