NCERT Solutions for Class 8 Science Chapter 11

NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure (अध्याय 11: बल तथा दाब) to Study online or View in Video Format or download free in PDF form for session 2020-21 based on new NCERT Books and new CBSE Syllabus.

CBSE NCERT Sols 2020-21 and Offline Apps are updated for new academic session 2020-2021. Not only 8th Science solutions but other subjects are also available.

NCERT Solutions for Class 8 Science Chapter 11

Chapter 11:Force and Pressure

Class 8 Science Chapter 11 Answers

NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure is given below updated for new session in English Medium. Video Format solutions of all chapters are also available. Download 8 Science App for offline use.

Important Questions for Practice

1. 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
2. During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is
(a) force of gravity.
(b) electrostatic force.
(c) force of friction.
(d) magnetic force.
3. Which one of the following forces is a contact force?
(a) force of gravity
(b) force of friction
(c) magnetic force
(d) electrostatic force
4. A ball of dough is rolled into a flat chapatti. Name the force exerted to change the shape of the dough.
5. A girl is pushing a box towards east direction. In which direction should her friend push the box so that it moves faster in the same direction?
6. During dry weather, clothes made of synthetic fibre often stick to the skin. Which type of force is responsible for this phenomenon?
7. A gas filled balloon moves up. Is the upward force acting on it larger or smaller than the force of gravity?
8. A chapati maker is a machine which converts balls of dough into chapati’s. What effect of force comes into play in this process?
9. Two persons are applying forces on two opposite sides of a moving cart. The cart still moves with the same speed in the same direction. What do you infer about the magnitudes and direction of the forces applied.
10. Fruits detached from a tree fall down due to force of gravity. We know that a force arises due to interaction between two objects. Name the objects interacting in this case.

Answers of Important Questions

1 (d)
2 (b)
3 (b)
4 Muscular force.
5 Towards east.
6 Electrostatic force.
7 Upward force is larger than the force of gravity.
8 The force changes the shape of the dough.
9 Both the forces are of equal magnitudes and applied in the opposite directions.
10 Earth and fruits.

Download NCERT Books and Offline Apps 2020-21 based on new CBSE Syllabus. Ask your doubts related to NIOS or CBSE Board and share your knowledge with your friends and other users through Discussion Forum.

NCERT Solutions for Class 8 Science Chapter 11 Force and Pressure
NCERT Solutions for Class 8 Science Chapter 11 in PDF
8 Science chapter 11 answers