To help students prepare and understand concepts of CBSE Class 9 Science related topics, Byju’s is providing NCERT solutions for class 9 Science topics. If a student has trouble understanding any topic, the student can go through questions and answers related to each topic covered in Class 9 Science. NCERT textbooks for Class 9 Science includes precise explanations with special consideration to important topics. Preparing NCERT text book topics is also mandatory for students who plan to appear and do well for their JEE in forthcoming years.
Byju’s also provides NCERT Class 9 Science solutions in pdf’s giving better accessibility to the students. It serves an important studying tool for students preparing for examinations and assignments.

Class 9 Science chapter-wise NCERT Solutions:

Chapter 1 – Matter In Our Surroundings
Chapter 2 – Is Matter Around Us Pure
Chapter 3 – Atoms and Molecules
Chapter 4 – Structure of the Atom
Chapter 5 – The Fundamental Unit of Life
Chapter 6 – Tissues
Chapter 7 – Diversity in Living Organisms
Chapter 8 – Motion
Chapter 9 – Force and Laws of Motion
Chapter 10 – Gravitation
Chapter 11 – Energy and work
Chapter 12 – Sound
Chapter 13 – Why do we fall ill
Chapter 14 – Natural Resources
Chapter 15 – Improvement in food Resources

Chapter 9: Force and Laws of Motion

1. Choose the one which has more inertia. i-A Toy thrown up by a boy (or) A coin thrown up ...
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Chapter 8: Motion

Questions: 1) A man walks around a square street of side 10 m in 40 sec. Calculate the displacement of ...
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Chapter 12: Sound

Que.1. When an object vibrates in a medium, it produces sound which reaches our ear. Explain how it is done ...
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Chapter 14: Natural Resources

Question 1: Compare the atmosphere of earth with that of Venus and Mars. Solution: The atmosphere of earth contains a ...
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Chapter 11: Work and Energy

Q1) A force 9N acts on a stone which has a displacement of 6 m, in the direction of the ...
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Posts in category Ncert solution class 9 science

Chapter 9: Force and Laws of Motion

Chapter 9: Force and Laws of Motion

1. Choose the one which has more inertia.      i-A Toy thrown up by a boy (or) A coin thrown up by a boy     ii-An apple falling from a tree (or) A rose falling from a plant     iii-A motorcycle (or) A bus Answer i-A Toy thrown up by a boy ii-An apple falling […]

Chapter 8: Motion

Chapter 8: Motion

Questions: 1) A man walks around a square street of side 10 m in 40 sec. Calculate the displacement of the man at the end of 2 minutes 20 seconds. Soln: The man takes 40 sec to cover ( 4 * 10 ) 40 metres. This shows he covers one metre in one sec. In […]

Chapter 12: Sound

Chapter 12: Sound

Que.1. When an object vibrates in a medium, it produces sound which reaches our ear. Explain how it is done. Ans. Sound propagates through air which is a medium. When the prongs of a tuning fork vibrate, they disturb the air molecules in the surrounding. When it moves forward, the molecules in the surrounding air […]

Chapter 14: Natural Resources

Chapter 14: Natural Resources

Question 1: Compare the atmosphere of earth with that of Venus and Mars. Solution: The atmosphere of earth contains a combination of different gases like nitrogen (78.08%), carbon dioxide (0.03%), oxygen (20.95%), water vapor and other gases. The atmosphere of Venus and Mars are largely composed of carbon dioxide, which constitutes 95% – 97% of […]

Chapter 11: Work and Energy

Chapter 11: Work and Energy

Q1) A force 9N acts on a stone which has a displacement of 6 m, in the direction of the force. Considering that the force acts on the stone with the displacement. Determine the work done in this case? Ans.)   Given Displacement = 6m, Force = 9N Now as we know that, Work done […]

Chapter 15: Improvement in Food Resou...

Chapter 15: Improvement in Food Resources

 QUESTIONS 1)            What do fruits, vegetables, cereals and pulses provide us? Solution: Cereals provide us with carbohydrates which supply energy to body. Pulses serve us with proteins which are the building blocks of our body and fruits and vegetables serve us with rich vitamins and minerals. 2)            How is crop production affected by biotic and […]

Chapter 3: Atoms and Molecules

Chapter 3: Atoms and Molecules

General Question: Illustrate the relationship between a mole, Avogadro’s number and Mass.   Q1. A reaction is taking place wherein, 5g of sodium carbonate reacts with 7.2 gm of ethanoic acid. The products are 4.2g carbon dioxide, 3g water and 5g sodium ethanoate. Prove how these observations are in coherence with the law of mass […]

Chapter 7: Diversity in Living Organi...

Chapter 7: Diversity in Living Organisms

In Text Questions: 1) Why are organisms classified? Solution: By classifying the organisms, it is easier and more convenient to study their characteristics.   2) Observe and state the different variations around you. Solution: (a)        Small frog to big whale (b)        Creeper to eucalyptus tree (c)        Black cuckoo to colourful peacock.   3)  What is […]

Chapter 2: Is Matter Around Us Pure

Chapter 2: Is Matter Around Us Pure

In Text Questions: 1) What does a pure substance mean? Solution: A pure substance is one, which contains only one type of atoms or molecules in a specific arrangement in any part of the sample taken. Example: water, diamond.   2) List the points of differences between homogeneous and heterogeneous mixtures. Solution: Homogeneous mixture Heterogeneous […]

Chapter 10: Gravitation

Chapter 10: Gravitation

Question 1: Why is it very difficult to hold a school bag with a long string and thin strap? Answer: The force exerted by a thin and strong string is equally spread on a very less area and hence the force applied due to the bag is more. The pressure is inversely proportional to its […]

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