NCERT Solutions For Class 9 Science: If you are a student of Class 9 and looking for NCERT solutions for Class 9 Science, then you are at the right place. In this article, we will provide you with detailed NCERT Solutions for Class 9 Science (all chapters) which have been prepared by the best academicians and experts at Embibe. The NCERT Class 9 Science Physics, Chemistry and Biology exercise solutions provided here are in accordance with the NCERT textbook. Besides that, the NCERT solutions provided here come with precise explanations which will help you improve your understanding of the subject.
We have also provided you with free PDF of NCERT solutions for Class 9 Science which will help you to study offline. These solutions will act as good reference material for you to solve the NCERT exercise questions and to complete your assignments on time. Go through the article to get the free PDF of NCERT solutions for Class 9 Science Chapter 1 to 15.
NCERT Solutions For Class 9 Science PDF (All Chapters)
Good knowledge and understanding of Science will help you not only in your upcoming Class 9 annual exams but also with the discussions in future grades, especially in Cass 10. Thus, in order to study these NCERT Class 9 Science chapters, you will have to start with learning the concepts and then solving the exercise problems. The solutions provided here will help you to solve the exercise questions and to understand the concepts better.
NCERT Solutions For Class 9 Science: Chapter-Wise NCERT Solutions Links
Students can get detailed NCERT Class 9 Science Solutions for all the chapters by clicking on the respective link as listed below:
Advantages Of Referring To NCERT Solutions For Class 9 Science
The advantages of referring to the CBSE NCERT solutions for Class 9 Science are as follows:
- A good reference to solve the NCERT exercises: At times students may not be able to answer the questions which may turn to be frustrating. In such cases, the NCERT solutions provided here will help you to solve and understand the problem.
- Better understanding of concepts: The solutions to the exercises are provided in a step-by-step and simplified manner which will help you to understand the concepts better.
- To complete assignments: Students can refer to the solutions to complete their assignments on time.
- Good revision material: Once you are done with learning and solving the exercises, it is very crucial to practice and revise the chapters regularly and the NCERT solutions provided here will help you in quick revision.
- Will lay a strong foundation for future grades: The concepts studied here will not only help you to excel in the upcoming Class 9 exam but also will act as a strong foundation for your studies in Class 10 and future grades.
CBSE NCERT Solutions For Class 9 Science: Chapter Descriptions
Let us now have a look at what each of the chapters in the NCERT syllabus of Class 9 Science deals with:
NCERT Solutions For Class 9 Science: Chapter 1 – Matter In Our Surroundings
Anything which occupies space and has mass is called matter. A rock occupies space and has mass. So, it is called a matter. The air you breathe, the food you eat, water, plants, and animals are all matter.
Early Indian philosophers classified matter as panch tattvas (five basic elements) – air, earth, fire, sky, and water. Modern-day scientists have classified matter on the basis of chemical and physical properties.
Matter is composed of particles. These particles of matter have space between them. They are continuously moving and attract each other. Matter has three states – solid, liquid, and gas. Under the right circumstances, matter can change its state. All these things will be discussed in this chapter along with activities and experiments to simplify the concepts.
- Anything that occupies space and has mass is called matter.
- It exists in the form of five basic elements, the Panch tatva – air, earth, fire , sky and water.
- For example: Chair, bed, river, mountain, dog, tree, building, etc.
Characteristics of the matter:
- The matter is made up of small particles called atoms.
- Particles of matter attract each other because of the force of attraction.
- These particles are constantly moving constantly.
- These particles are too small to be observed with the naked eye.
- These particles have spaces between them.
NCERT Solutions For Class 9 Science: Chapter 2 – Is Matter Around Us Pure
A pure matter is made up of only one particle or atom or molecule. An impure matter, on the other hand, has more than one type of particles or atoms or molecules. Pure gold should consist of only gold atoms.
It is very difficult to get 100% pure matter because there is always some dust or impurities present in a matter. Pure matters are categorized into elements and compounds. Elements are categorized into metal, non-metal, and metalloids. Compounds can be divided into acid, bases, and salts. Impure substances or mixtures are divided into homogenous and heterogeneous mixtures.
In this chapter, all these things will be explained.
NCERT Solutions For Class 9 Science: Chapter 3 – Atoms & Molecules
If you take a grain of sand and put it under a microscope, you will be able to see that the grain is made up of tiny grains. Ever wondered when you will be able to find the smallest particle which cannot be further divided. You need to use a scanning tunnelling microscope in order to see the atoms. The smallest grain of sand that you can find will be made up of millions of atoms.
An atom consists of Protons, Neutrons, and Electrons. The electrons revolve around the nucleus which is made up of neutrons and protons. The protons are positively charged while the neutrons have no charge. So, the nucleus is positively charged. On the other hand, the electrons are negatively charged. In a stable condition, the number of electrons and protons in an atom remains the same and hence, the atom is neutral.
NCERT Solutions For Class 9 Science: Chapter 4 – Structure Of The Atom
The atom is the fundamental building block of matter. But what makes the atom of one element different from the atom of another element? What are the constituents of an atom? For this one must start with understanding the structure of the atom.
There are different structures of atoms as proposed by different scientists – J.J. Thomson, Rutherford, and Bohr were the scientists who proposed different atomic models. Each atomic model had some drawbacks which were explained in the next atomic model. All these studies on the structure of the atom revealed the existence of sub-atomic particles such as protons, neutrons, and electrons.
The distribution of electrons in different shells, the position of protons and neutrons are also discussed in this chapter. Besides that, you will also learn about the atomic number, atomic mass number, Isotopes, and Isobars.
NCERT Solutions For Class 9 Science: Chapter 5 – The Fundamental Unit Of Life
In this chapter, you will study the fundamental unit of life – the living cell. All living beings are made up of cells. Here, the classification and structure of the living cell will be discussed. Cells can be classified based on different parameters. The most common classification is Plant Cell and Animal Cell.
A cell is mainly made up of a cell wall or cell membrane, cytoplasm, nucleus, and other cell organelles. You will learn about the different cell organelles such as endoplasmic reticulum, Golgi apparatus, lysosomes, mitochondria, plastids, and vacuoles. In the end, you will also learn about the processes of cell division – Mitosis and Meiosis. You will also be introduced to chromosomes which will act as the basis for discussions in future grades.
NCERT Solutions For Class 9 Science: Chapter 6 – Tissues
Living creatures are made up of cells but when you dive deeper, we see that different processes take place in an organism for it to survive and each process is handled by some special types of cells. For example, your heart and liver perform different functions but both are made up of cells. You will see that all the organs are made up of cells but a certain group of cells has modified themselves to perform a specific task. Such a group of cells involved in a specific task is called a tissue.
In this chapter, you will learn about both plant tissues and animal tissues. Under plant tissues, you will learn about meristematic tissue and permanent tissue. Under animal tissues, you will learn about epithelial tissue, connective tissue, muscular tissue, and nervous tissue. You will also learn about the structure, functions, and location of each type of tissue in this chapter.
NCERT Solutions For Class 9 Science: Chapter 7 – Diversity In Living Organisms
We see a variety of living organisms around us. Each of these organisms lives in different habitats and have different structural and physiological characteristics. The challenge here is that based on what do we categorize these organisms and name them in a well-defined manner.
In this chapter, you will learn all about the classification of organisms. To start with you will first understand the basis of 5 kingdom classification – Monera, Protista, Fungi, Plantae, and Animalia. You will learn about each of these in detail along with examples.
Considering the major classification, you will learn about Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, and Angiosperms under Plantae and Porifera, Coelenterata, Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, Echinodermata, and Protochordata under Animalia. This chapter consists of various terminologies and examples and you can make a table placing all these respectively for effective learning and revision.
NCERT Solutions For Class 9 Science: Chapter 8 – Motion
When you say that an object is moving, is it really moving? We need to compare or relate the object in question with some other object to determine if it is in motion or rest. If we see any object moving we call it moving but if we see any object not moving we say it is at rest. But actually, all objects on this earth are in motion the earth is constantly moving. So, what would you if a box is lying on the floor? Is it in motion or at rest?
It’s all about the perspective. According to our perspective, the box lying on the floor is at rest. Another example would be when you are on a train. If you see outside, you will feel like the objects outside the train are in motion but the truth is that you are in motion and interpreting the things outside as moving. What if another train runs at the same speed adjacently to your train? The person in that train would seem as not moving to you but is actually in motion. This is relative motion.
NCERT Solutions For Class 9 Science: Chapter 9 – Force & Laws of Motion
In our everyday life, we see objects in rest and in motion. When an external force is applied on an object, it causes such motion. We apply force in our day-to-day activities, such as to open the drawer, to push a shopping trolley, to hit a ball, etc. All these activities are governed by the laws of motion. The applied forces could be balanced or unbalanced and depending on that, a result will be seen.
To start with, you will learn about the first, second and third laws of motion with examples, mathematical equations, and applications. Based on Newton’s laws of motion, you will learn about inertia, mass, and conservation of momentum which are the fundamental concepts in Physics. There are plenty of real-life examples and activities for a better understanding of the concepts.
NCERT Solutions For Class 9 Science: Chapter 10 – Gravitation
Objects which are thrown up come down. This means that there is some kind of force acting on the bodies all the time. All of us are overcoming this force to do our day-to-day activities. If you are walking or picking up a glass of water to drink, you are doing work against this force to perform that task. This downward force is called the gravitational force.
In this chapter, you will learn all about gravitation. To start with, the Universal Law of Gravitation will be discussed in detail with diagram and mathematical equations. With the introduction of the concept of acceleration due to gravity, you will know the differences between mass and weight. You will also learn about free fall, thrust, pressure, buoyancy, Archimedes’ Principle and relative density.
NCERT Solutions For Class 9 Science: Chapter 11 – Work & Energy
We use the term work and energy very often in our life but here in this chapter we will learn the scientific meaning of the two terms. There are many situations in your daily life when you perform some work, which involves energy. We have many appliances at home which work on electricity (electrical energy) but exhibits energy in various other forms. This indicates that energy is interconvertible.
In this chapter, you will learn more about this. The discussion will start with understanding the scientific meaning of the term ‘work’. You will also learn the scientific meaning of ‘energy’ and forms of energy (potential and kinetic energy). Later in the chapter, you will learn about the law of conservation of energy, energy interconversion and rate of doing work. Here the law of conservation of energy is very important which says that you can neither create nor destroy energy but can only convert it from one form to another. This will also be the base for discussion in the future. The chapter also involves various activities and examples to help you in better understanding of the concepts.
NCERT Solutions for Class 9 Science: Chapter 12 – Sound
We listen to different types of sound every day but did you know that sound is a form of energy? Sound is produced by a source (a vibrating object) and it needs a medium to propagate. Sound travels as a longitudinal wave. You must have heard an echo, right? Based on the concept of echo (reflection of sound), SONAR and its applications will be discussed. You will also get to know about the characteristics of sound wave (frequency, amplitude, and speed) and the speed of sound in different mediums.
NCERT Solutions For Class 9 Science: Chapter 13 – Why Do We Fall Ill?
We fall ill when we don’t care about our health but what is health. Health is the state of complete physical, mental, social well-being and not merely absence of disease. It is the perfect balance between a person and his environment and the proper functioning of all the organs in the body. All the organs should work in a perfect way. There are three types of health: physical, mental and social. There are a lot of factors that can affect the health of a human being like a physical environment, social environment, public cleanliness, balanced diet, economic conditions, et. The characteristics of good health are free from sickness and disease, unnecessary anxiety and tension, free from psychological illness.
NCERT Solutions For Class 9 Science: Chapter 14 – Natural Resources
Natural resources are the resources that occur in nature. Renewable resources are the resources which can be replenished and replaced through natural reproduction or other recurring processes in a finite amount of time. Non-renewable resources are the resources that cannot be readily replaced by natural means within the human time scale. Examples of renewable resources are sunlight, freshwater, and biomass while gasoline, coal, natural gas, plastics, and other fossil fuels are non-renewable resources.
NCERT Solutions For Class 9 Science: Chapter 15 – Improvement In Food Resources
Food is essential for us as it provides us with energy. With our limited resources and increasing population, we need to work in the area of improvement in our food resources. We need to improve in the area of agriculture and animal husbandry. We also need to come up with some techniques that could lead to an increase in the productivity of animals and land. The land is limited and we need to feed billions of people. Intensive techniques have to be implemented in the agriculture sector like growing several crops in a year, adding nutrients, re-using the same land. But there are some techniques that could damage the quality of the soil. For example, the use of fertilizers. So, we need to improve food production without damaging natural resources.
We have now provided you with the NCERT solutions for Class 9 Science for all chapters. Make the best use of these solutions. Try answering the exercise questions by yourself and refer to the NCERT Class 9 Science solutions for better understanding. You can also solve more questions from Class 9 Science chapters on Embibe which will help you to strengthen your concepts and problem-solving abilities.
FAQs On NCERT Solutions For Class 9 Science
The frequently asked questions regarding NCERT Solutions for Class 9 Science are listed below:
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