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?

Magnitude of force applied by A is greater than that of B because the block moves towards right i.e., towards B.

Which of the following is not an example of the force of gravity?

All are the examples of gravity force except one. A boy pushing a cart on a level plane is an example of contact forces. Remember, forces are used in our everyday actions like pulling, pushing, lifting, stretching, pressing and so on.

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

The electrostatic force is responsible for it, since on comparing the hair, the comb and hair get oppositely charged.

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?

As we know that pressure exerted by the body is inversely proportional to the area where force is applied. So, which has less area of cross section in contact with the surface will exert more pressure on the ground. It is clear that height from the base exerts more pressure. Therefore, the maximum pressure is exerted when length and height form the base.

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

Pressure will be maximum in position V, because area of contact is minimum in this case and area is inversely proportional to pressure.

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?

An electrostatic precipitator is a type of filter (dry scrubber) that uses static electricity to remove soot and ash from exhaust fumes before they exit the smokestacks. This one common air pollution control device. Most power stations burn fossil fuels such as coal or oil to generate electricity for use.

Which of the following statement is or are incorrect?

Here, all the statements are correct. Hence, your answer will be option [D].

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

Here, all the statements are correct. Hence, your answer will be option [D].

The magnitude of force is expressed in the unit of force called:

The strength of a force is expressed by its magnitude. The magnitude of force is expressed in the SI unit of force called “Newton”.

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:

Here, all the statements are correct. Hence, your answer will be option [D].

Which of the following scientists gave the idea of the existence of gravitational force?

The English scientist Isaac Newton had given the idea for gravitational force when he saw an apple fall from a tree. The force with which the earth pulls the objects towards it, is called the force of gravity. Gravity is a natural force of attraction. We are all pulled (including every object) to the earth by the force of gravity.

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

Here, all the statements are correct. Hence, your answer will be option [D].

A blunt knife does not cut an object easily because:

A blunt knife does not cut an object easily because due to its thicker edge, the force of our hand falls over a larger area of the object and produces lesser pressure. This lesser pressure cuts the object with difficulty.

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

We know that the SI unit of pressure is pascal (Pa) but atmospheric pressure is usually measured in the unit of “millimeter of mercury” (mm of mercury) for the sake of convenience in measuring it. The atmospheric pressure on the surface of earth (at the sea level) is 760 mm of mercury.

A school bag has wide strap made of thick cloth so that:

A school bag or shoulder bag has wide strap made of thick cloth (canvas) so that the weight of bag may fall over a large area of the shoulder of the child producing less pressure on the shoulder. And due to less pressure, it is more comfortable to carry the heavy school bag.

When we press the rubber sucker on a flat, smooth surface. A rubber sucker stays attached firmly to a flat surface due to:

When we press the rubber sucker on a flat, smooth surface, its concave rubber cup gets flattened to a large extent, pushing out most of the air from beneath it. Since, very little air remains inside the flattened rubber sucker, therefore, the air pressure inside the rubber sucker becomes very low (and a partial vacuum is created). The much greater atmospheric pressure acting on the rubber sucker from outside fixes the rubber sucker firmly on the flat surface.

Class 8 Science Chapter 11 MCQ

Class 8 Science Chapter 11 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 2021-2022.

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 11 MCQs covers the entire chapter and all the topics with suitable answers and explanation.

Class 8 Science Chapter 11 MCQ for 2021-2022

Class: 8	Science
Chapter: 11	Force and Pressure
Contents:	MCQ Online Test with answers

MCQ Tests with Answers for Class 8 Science Chapter 11

In the electric bell circuit, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer?

[A]. Gravitational force alone

[B]. Electrostatic force alone

[C]. Magnetic force alone

[D]. Frictional force alone

View Answer

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

View Answer

Which one of the following forces is a contact force?

[A]. Force of gravity

[B]. Force of friction

[C]. Magnetic force

[D]. Electrostatic force

View Answer

Consider the following statements and choose the incorrect one:

[A]. The strength of a force is expressed by its magnitude.

[B]. The magnitude of a force is expressed in the SI unit of force called “Newton”.

[C]. An adult man can apply large force on an object whereas a child can apply only a small force on an object.

[D]. None of the above

View Answer

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

View Answer

There is a magnetic force of repulsion between the like poles of two magnets. Priya is writing some statements, choose the correct statement and help her:

[A]. The force exerted by a magnet is called magnetic force.

[B]. There is a magnetic force of repulsion between the like poles of two magnets.

[C]. There is a magnetic force of attraction between the unlike poles of two magnets.

[D]. All the above

View Answer

The force of 150 N is applied to an object of area 3 m2. Calculate the pressure.

[A]. 25 N/m2

[B]. 50 N/m2

[C]. 100 N/m2

[D]. 147 N/m2

View Answer

Some mustard oil is kept in a beaker. It will exert pressure:

[A]. Downwards only

[B]. Sideways only

[C]. Upwards only

[D]. In all directions

View Answer

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

View Answer

Q10

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

View Answer

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How to prepare chapter 11 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 11 of class 8 Science.

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Class 8 Science Chapter 11 MCQ

Class 8 Science Chapter 11 MCQ for 2021-2022

MCQ Tests with Answers for Class 8 Science Chapter 11

In the electric bell circuit, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer?

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:

Which one of the following forces is a contact force?

Consider the following statements and choose the incorrect one:

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

There is a magnetic force of repulsion between the like poles of two magnets. Priya is writing some statements, choose the correct statement and help her:

The force of 150 N is applied to an object of area 3 m2. Calculate the pressure.

Some mustard oil is kept in a beaker. It will exert pressure:

The atmospheric pressure is usually measured in the unit of:

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

How to prepare chapter 11 of Class 8 Science?

High School

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Class 8 Science Chapter 11 MCQ

Class 8 Science Chapter 11 MCQ for 2021-2022

MCQ Tests with Answers for Class 8 Science Chapter 11

In the electric bell circuit, when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer?

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:

Which one of the following forces is a contact force?

Consider the following statements and choose the incorrect one:

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

There is a magnetic force of repulsion between the like poles of two magnets. Priya is writing some statements, choose the correct statement and help her:

The force of 150 N is applied to an object of area 3 m2. Calculate the pressure.

Some mustard oil is kept in a beaker. It will exert pressure:

The atmospheric pressure is usually measured in the unit of:

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

How to prepare chapter 11 of Class 8 Science?

NCERT Solutions

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