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NCERT Solutions for Class 9 Science

NCERT Solutions for class 9 Science is prepared by highly experienced faculty member of Physics Wallah. Science is one of the most crucial subjects that students study in class 9. The syllabus of class 9 acts as a foundation to study further advanced topics. NCERT Solutions of Physics Wallah is appreciated by large number of academician.

The NCERT solutions for class 9 Science are prepared under the guidance of experts. The team at Physics Wallah is altogether ready to assist students with their preparation of examinations. We provide a detailed solution to class 9 science through NCERT solutions for class 9 Science. Science is one such subject which comprises of the various number of theories and numerical. Since science has a wide syllabus, we at Physics Wallah have provided NCERT solutions for class 9 Science in a short form.

NCERT Solutions for Class 9 Science Chapters (Updated 2022-23)

NCERT Solutions for Class 9 Science Free PDF Download

NCERT Solution for class 9 Science

Chapter 1 Matter in Our Surroundings

Everything in this universe is made up of material which has been named ‘matter’ by scientists. The air we breathe, the food we eat, the water we drink, stones, clouds, stars, plants and animals or a particle of sand – every thing around us is matter. Since early times, human beings have been trying to understand their surroundings.

Early Indian philosophers classified matter in the form of five basic elements – the “Panch Tatva” – air, earth, fire, sky and water. According to them, everything living or non-living, is made up of these five basic elements.Modern day scientists have given two types of classifications of matter based on their physical and chemical properties.

Let us learn about matter based on its physical properties in this chapter. Definition of matter; solid, liquid and gas; characteristic–shape, volume, density, change of state–melting(absorption of heat), freezing, condensation, sublimation, evaporation (cooling by evaporation)

Number of Questions in NCERT Class 9 Science Exercise for chapter-1 are 4 from Exercise-1 to 4 and having total Questions-26

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Chapter 2 Is Matter Around Us Pure

Matter is made of one or more components known as substances. In terms of science, a substance is a kind of matter which cannot be separated into any other types of matter by some physical means. Such a substance which has only one component and nothing else in it is called a pure substance.

But it is quite difficult to get a pure substance as such. Substances are mostly mixed with one another and their combination is known as mixture. Different types of mixtures are possible. From this we conclude that matter around us is of two types:— pure substances, mixtures.

Number of Questions in NCERT Class 9 Science Exercise for chapter-2 are 4 from Exercise-1 to 4 and having total Questions- 31

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Chapter 3 Atoms and Molecules

Ancient Indian and Greek philosophers believed that all the matter around us is made up of five basic elements namely earth, fire, water, air and sky. The Indian philosopher ‘Maharishi Kanad’ postulated that matter is made up of small indivisible particles called “Parmanu”. Greek Philosopher Democritus and Leuccipus named these particles as “atom”, which are the building blocks of matter.

  1. How these atoms combine to form molecules?
  2. Why do they combine?
  3. What are the laws governing the combination of elements to form compounds.

All these will be discussed in detail in the following lesson.Atoms and molecules. Law of constant proportions. Atomic and molecular masses. Mole concept : Relationship of mole to mass of the particles and numbers. Valency. Chemical formula of common compounds.

Number of Questions in NCERT Class 9 Science Exercise for chapter-3 are 5 from Exercise-1 to 5 and having total Questions-31

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Chap​ter 4 Structure of The Atom

The idea that matter is composed of discrete units and can not be divided into any arbitrarily tiny or small quantities has been around for thousands of years. But in 1897, JJ Thomson, through his work on cathode rays, discovered the ‘electron’ and its sub-atomic nature, which destroyed the concept of atoms as being indivisible units.

The aim of this chapter will be to discuss how the sub-atomic particles (i.e., electrons, protons, neutrons) were discovered and how they are arranged within the atom, i.e., to study the ‘model of an atom’. Structure of atom : Electrons, protons and neutrons; Isotopes and isobars.

Number of Questions in NCERT Class 9 Science Exercise for chapter-4 are 7 from Exercise-1 to 7 and having total Questions-29

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Chapter 5 The Fundamental Unit of Life

The history of biology traces the study of the living world from ancient to modern times. Although the concept of biology as a single coherent field arose in the 19th century, the biological sciences emerged from traditionsofmedicine and natural history reaching back to ayurveda, ancient Egyptian medicine.

Cell form the basis of all living things. They are the smallest single unit of life, from the simplest bacteria to blue whales and giant redwood trees. Differences in the structure of cells and the way that they carry out their internal mechanisms for the basis of the first measure division of life, into the three kingdoms of Archaea (ancient bacteria, Eubacteria (modern bacteria) and Eukaryota (everything else, including us).

An understanding of cell is therefore vital in any understanding of life itself.Cell biology (formerly cytology, from the Greek kytos, "contain") is a scientific discipline that studies cells – their physiological properties, their structure, the organelles they contain, interactions with their environment, their life cycle, division and death.

This is done both on a microscopic and molecular level. Cell biology research encompasses both the great diversity of single-celled organisms like bacteria and protozoa, as well as the many specialized cells in multicellular organisms such as humans, plants, and sponges.Knowing the components of cells and how cells work is fundamental to all biological sciences.

Appreciating the similarities and differences between cell types is particularly important to the fields of cell and molecular biology as well as to biomedical fields such as cancer research and developmental biology. These fundamental similarities and differences provide a unifying theme, sometimes allowing the principles learned from studying one cell type to be extrapolated and generalized to other cell types.

Therefore, research in cell biology is closely related to genetics, biochemistry, molecular biology, immunology, and developmental biology. Number of Questions in NCERT Class 9 Science Exercise for chapter-5 are 3 from Exercise-1 to 3 and having total Questions-23.

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Chapter 6 ​Tissues

​Have you ever thought, how plants

  1. Get support to stand erect ?
  2. Delicate leaves resist strong winds ?
  3. The trunk of the tree grows in height and increases in diameter ?

How do animals

  1. Exhibit locomotion ?
  2. Breathe in and transport oxygen ?
  3. Respond to changes in external environment ?

This chapter will help you to get answers to these queries and will also throw light on how plants and animals efficiently show division of labour.

Topics To be covered are - Tissues, organs, organ systems, organism. Structure and functions of animal and plant tissues (four types in animals; meristematic and permanent tissues in plants). Number of Questions in NCERT Class 9 Science Exercise for chapter-6 are 4 from Exercise-1 to 4 and having total Questions-25

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Chapter 7 Diversity in Living Organisms

Every organism is unique in itself. The multitudes of life forms that surround us have evolved on the earth over millions of years.Some of the bacteria may be a few micrometres in size, while there are blue whales and red wood trees of California having an approximate size of 30 metres and 100 metres respectively.

Some pine trees live for thousand of years while insects like mosquitoes die within a few days.It is practically not easy to study and know about different organisms. Further it will create confusion.This chapter will help us to discover the efforts of some scientists in classifying, naming and grouping organisms based on certain criteria.

Topics To be covered are- Diversity of plants and animals-basic issues in scientific naming, basis of classification. Hierarchy of categories/groups and major groups of plants (salient features) (Bacteria, Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms). Major groups of animals (salient features) (Non-chordates up to phyla and Chordates up to classes).

Number of Questions in NCERT Class 9 Science Exercise for chapter-7 are 4 from Exercise-1 to 4 and having total Questions-23.

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Chapter 8 Motion

In every day life, we see that many objects are stationary while others keep on changing their position.We can see beautiful birds flying and fishes swimming in water. Atoms, molecules, planets, comets, stars and galaxies are all moving. Many times, motion or change in position of an object cannot be seen directly but it can only be inferred through indirect evidence.

For example we know that air is moving when we see leaves moving but we cannot see it directly.Many times, motion is a complex phenomenon. The same object may appear to be moving for one person but may be stationary for the other. A person outside the car may see a car moving but two people inside the car may appear to be at rest with respect to each other.

Some objects move in a straight line while others move in a circular path.Let us study and try to solve these complexities of motion. Number of Questions in NCERT Class 9 Science Exercise for chapter-8 are 4 from Exercise-1 to 4 and having total Questions-27.

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Chapter 9​ Force and Laws Of Motion

We have already read about motion of a body along a straight line in terms of its velocity, acceleration and distance travelled by the body in a particular time. But what is the cause behind this motion?In day to day life, we observe that some effort is required to put a stationary object into motion or to stop it.

So, to produce motion, the effort which is required is called as “Force”.In this chapter, we will study about different concepts that revolve around “Force” as well as laws that govern motion.Number of Questions in NCERT Class 9 Science Exercise for chapter-9 are 4 from Exercise-1 to 4 and having total Questions-30

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Chapter 10 Gravitation

The force of interaction between any two particles having masses m1 and m2 separated by a distance r is attractive and acts along the line joining the particles. where G is a universal constant having the same value for all pairs of particles. Its numerical value is 6.67 x 10-11 Nm2/kg2.

The gravitational forces between two particles are an action – reaction pair. The first particle exerts a force on the second particle that is directed toward the first particle along the line joining the two.Similarly , the second particle exerts a force on the first particle that is directed towards the second particle along the line joining the two.

These forces are equal in magnitude but oppositely directed.Number of Questions in NCERT Class 9 Science Exercise for chapter-10 are 4 from Exercise-1 to 4 and having total Questions-28.

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Chapter 11 Work and Energy

When a force acts on a body and it moves through a certain distance, work is said to be done. The concept of work is closely related to energy as more the energy spent, more is the work done. A person with more power can also do more work. Let us study these concepts.

Topics To be covered are- Work done by a force, energy, power, kinetic and potential energy, law of conservation of energy. Number of Questions in NCERT Class 9 Science Exercise for chapter-11 are 4 from Exercise-1 to 4 and having total Questions-24.

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Chapter 12 Sound

CBSE Class 9 Science Chapter 12 covers sound production, sound propagation, sound reflection, range of hearing, applications of ultrasound, and the structure of the human ear. There are also a few questions in the chapter which can be solved only after understanding the concepts. So students must grasp and study the chapter carefully. Topics covered in this chapter are- Nature of sound and its propagation in different media, the range of hearing in humans; the speed of sound, ultrasound; a reflection of sound, and echo.

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Chapter 13 Why Do We Fall Ill

NCERT Solutions for Class 9 Science chapter-13 deals with health problems and different types of diseases. It includes topics such as; Health and its failure, disease and its cause, and infectious diseases. This chapter is added to make students aware of different diseases to take care of their health and be fit and healthy.

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Chapter 14 Natural Resources

We are blessed with natural resources. These are necessary to meet the basic requirements of all life forms on Earth. Therefore, this chapter has been included by NCERT to provide knowledge about the types of resources available on Earth. This chapter deals with topics such as air, water, soil, the biogeochemical cycle and the ozone layer, its importance, and how humans pollute them.

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Chapter 15 Improvement in Food Resource

The final chapter of NCERT Class 9 Science covers improving crop yields, fertilizer, storage of grains, manure, and animal husbandry. This chapter provides knowledge about agriculture, farming, and dairy.

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Why NCERT Solutions for Class 9 Science are important?

  1. The NCERT solutions for class 9 Science prepared by Physics Wallah is useful in school exam preparation. Students preparing for competitive examinations can also refer to these NCERT solutions for class 9 Science with additional notes of class 9 science uploaded at science section of Physics Wallah.
  2. Since our team comprises of experts from various field, so they are well acquainted with the type of questions asked in competitive examinations. Our experts have already aced national level examinations, so NCERT solutions for class 9 Science they have complete knowledge of scoring maximum marks.
  3. Since science is one such subject which has a variety of theories and formulas to be remembered. This NCERT solution for class 9 Science is prepared in a very systematic manner. Students can easily revise this study material just before their examination.
  4. The ability to explain complex theories is well-taken care while drafting study material. We have taken special steps to make complete study material very concise. All the unnecessary things are removed in the NCERT solutions for class 9 Science by drafting in order to prevent wastage of time.
  5. Our faculties are completely dedicated to preparing as accurate as a possible study material. We have revised NCERT solutions for class 9 Science on a regular basis to make it flawless on every aspect. All the possible errors in the NCERT solutions for class 9 Science are practically removed.

Why Physics Wallah is best for NCERT solutions for class 9 Science?

The subject material is always the preference of toppers in all the schools. The very reason for the success of NCERT solutions for class 9 Science is that we have provided a completely holistic approach while drafting. One can also find important questions marked in the solutions. The experts want students to focus effectively on the most regularly asked questions.

The NCERT solutions for class 9 Science is easy in sharing and can be used on multiple devices. The study material has been prepared in Pdf format. The very objective of the team at Physics Wallah is to ensure students have stronger foundations when they go in higher classes.

Science is one of the most crucial subjects that students study in class9. The syllabus of class 9 acts as a foundation to study further advanced topics. The NCERT Solutions for class 9 Science are prepared under the guidance of experts. The team at Physics Wallah is altogether ready to assist students with their preparation of examinations.

We provide a detailed solution to class 9 science through NCERT solutions for class 9 Science. Science is one such subject which comprises of the various number of theories and numerical. Since science has a wide syllabus, we at Physics Wallah have provided NCERT solutions for class 9 Science in a short form.

How to Study NCERT Solutions for class 9 Science effectively?

The faculties at Physics Wallah have gone off the table to provide with a detailed analysis of the complete subject. The team has gone through previous year question papers and drafted compete for study material accordingly only. Students can find this NCERT solution for class 9 Science very relatable to the final examination only. The experts in our team are well acquainted with in and out of the subject. Students studying through NCERT solutions for class 9 Science need not worry since they are already studying from most expert material.

Technique to score excellent marks in Class 9 Science:

  1. The students should draw the diagram in their answer and write the formulas wherever they feel the need for the same.
  2. Write down the answer in points because it will help the students in fetching more marks in exams.
  3. The concept needs to be understood by the students from the NCERT textbooks.
  4. Brush up the important science definitions, science equations, science formulas, etc.
  5. Students need to make a habit of reading as it will help them to retain things in their mind.
  6. Revise your paper after completing your whole answer sheet.

Key benefits of using NCERT Solutions for class 9 Science

Class 9 Science consist of chapters from all three sections of science like Physics, Chemistry & Biology and these chapter need different approach to build good concepts. For example, if you are doing chemistry you must understand the reactions and its condition may be your need to remember the reactions for next chapter and it can be applied.

While doing physics chapter from NCERT class 9 text book you must have clear concept to apply in questions and need to remember formula given in NCERT text book. Biology of NCERT text book required good notes one must write the bullet points which are important. To score good marks in class 9 science you must solve the exercise given in NCERT text book and all most all questions in class 9 NCERT text book are theoretically based.

How NCERT Solution for Class 9 Science can help

Preparing for CBSE class ninth is no easy task. There is a huge amount of syllabus to cover in a short period of time. For effective use of NCERT Solutions for class 9 science one must follow the following points.

  1. One must read NCERT text book and solve all questions of NCERT text book you can take help form NCERT solution for class 9 science. It is necessary to focus on one’s studies and stay sharp.
  2. There is a constant nagging in every student’s head on how to score good marks. So, you just have to study your subjects and understand every concept.
  3. Exams play a very significant role in all our lives and it is the stepping stone to a student’s future. Scoring good marks is the greatest desire of every student and it does not matter how they performed throughout their school life.
  4. An academic excellence is often judged by their performance in the final exams.
  5. Even though CBSE class 9 is not considered as the board exams, it is the foundation for higher classes, as it provides the basic knowledge about every concept in the syllabus of class 10, 11 and 12.
  6. There will be a lot of syllabi to be covered in a short period of time, it is necessary to focus on one’s studies and understand every concept. Refer more NCERT textbooks for accurate information. Most of the questions in CBSE exams are directly asked from these NCERT books.
  7. Read the NCERT textbook of science and maths thoroughly. Complete each and every chapter of science and maths and solve all questions of NCERT along with NCERT exemplar.
  8. It also helps in cracking competitive exams such as NTSE and Olympiads. So don’t ignore the studies of class 9, concentrate and study well to confidently write higher standard exams.

How to follow NCERT Text Book of Class 9 Science

Follow NCERT textbooks and understand the concept of Physics, Chemistry and Biology. These subjects are all about definitions, experiments, equations, formulas and plants and animals. You should be thorough in drawings. Understand the physics theory and formulas to solve the problems. To help you while solving questions of exercise given in NCERT we have prepared detail step by step explanation of NCERT solutions.

Class 9th is the most important year of your career all most all entrance exam preparation start from this class like Olympiad, JEE, NEET. Physics Wallah always recommended to start it early time and foundations course also start from class 9, therefor keeping this in mind one must start focusing on all science topic and read the chapter theory carefully.

NCERT class 9 science book is sufficient in few topic and other you need some more resource to solve this Physics Wallah team create a details theory of all topics of class 9 science based on NCERT syllabus and slowly we have elevated the level of theory and questions to have more practice. Physics Wallah prepared a detail chapter wise theory of all topics in class 9 which are divided in Physics class 9, Chemistry class 9 and Biology class 9. One must solve the MCQ given in this section.

Strengthen the grip of Class 9th Science subject

NCERT book is a really helpful resource for the students. It not only enhances the knowledge of the students but also satisfy their inquisitive. The book covers vast topics for the subjects like Physics, Chemistry, Biology, and Astronomy.

No matter whatever the subject is, every subject gives you a broad idea of each topics. The content that is used in the subject is easy to understand by the student. In case you have made a target to score the highest marks in your class 9 Science exams, then NCERT solutions for class 9 Science is a reliable book to opt for.

For the students, it is important for them to get familiar with the topics and to understand every concept clearly. The chapter notes in NCERT solutions for class 9 Science will give them the crisp and understandable explanation of the subject.

Apart from this, the content of the subject is put in a detailed manner with the usage of diagrams, formulas, and much more. The pictures and diagrams are used in various chapters so that students get a better understanding of the particular topic. The books also give a clear idea to the students on what type of questions can be asked in the examination. This manner, student can makes preparation for their Science subjects before the exam.

Importance of NCERT solutions for class 9 Science

NCERT solutions for class 9 Science opens a new door of opportunity for the students. 9th standards is the building block for all the students who will be appearing for board exams. The basic fundamental for different branches of studying is better understood by students in the 9th standard.

They have a good understanding of Engineering, Medical, Commerce, and Arts. This will help them in deciding which stream to choose for future goal. Apart from this is the books on which the students can trust blindly.

Frequently Asked Question (FAQs)

Q1. What is right strategies to score Good marks in class 9 Science?

Ans. To score full Marks in class 9 Science one must follow NCERT text book completely with each and every lines mentioned in NCERT text book. Start building up your own concepts. prepare your notes from NCERT class 9 Science text book ensure you have mentioned all important bullet points given in the chapter.

Try to write answer of all questions asked in exercise by yourself and use NCERT solutions for class 9 Science only for reference. Build your understanding and understand the pattern from previous year class 9 Questions papers and do practice from class 9 Science sample papers. Always remember doing practice good Science numerical is best way out to score full marks in class 9 Science.

Q2. What are the Important chapters of class 9 Science for CBSE Board Exam ?

Ans. To score good marks focus on entire syllabus of class 9 science. From the analysis of previous year pattern it is observed that there are few chapters which are important for upcoming exam like Diversity in Living Organisms, Motion , cell atomic structure so give more focus on these chapters.Do solve all Important questions of class 9 Science prepared by Physics Wallah.

Q3. How to use NCERT Solutions for class 9 Science effectively ?

Ans. NCERT solutions for class 9 Science must be use with the following instructions such as.

  1. Do not copy any solution for your homework form NCERT solutions for class 9 Science.
  2. Try to find out the answer and best solution of each and every question asked in the exercise do not go for solution immediately.
  3. Use NCERT solutions for class 9 Science only for the reference purposes not for solving the home work.

Q4. How many chapters are in NCERT class 9 Science and in CBSE class 9 Science syllabus?

Ans. NCERT class 9 Science consist 15 Chapters and each chapter having two to three exercise consist of Questions of type Long Answers, Short Answer and MCQ based questions. There are almost 30 to 45 question in each chapter. Students must solve NCERT exemplar for more practice.

Q5. Is NCERT class 9 Science is sufficient for CBSE final exam ?

Ans. Yes if you are preparing for CBSE class 9 final and unit test of school than NCERT text book is more than enough however if you are preparing for NTSE or foundation for JEE than you need additional recourses like Physics Wallah Class 9 Science notes for JEE. For NTSE you need to solve additional questions from Science section of Physics Wallah.

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