NCERT Solutions for Class 9 science covers all the questions given in the NCERT book. You can study and download these question and their solutions free from this page. These solutions are solved by our specialists at SaralStudy.com, that will assist all the students of respective boards, including CBSE, who follows NCERT; with tackling all the questions easily. We give chapter wise complete solutions for your straightforwardness.
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Chapter 1 Matter in Our Surroundings
This chapter explains about how a small particle constitue to form matter into different forms like solid, liquid and gases. Matter is that substance that occupies space have mass and volume. Various forms of matter exhibit different properties how the particle are interacted. Lets read more about matter.
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Chapter 2 Is Matter Around Us Pure
In the previous chapter we had discussed matters. In this chapter we will explore more about pure substance and mixture. What are their properties, how different mixtures of substance can be separated what makes them together.
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Chapter 3 Atoms and Molecules
Atom (Parmanu) is the basic unit for the chemicals or it better to say that existence of everything around us. If we look in our surrounding we see a lot of thing each and every part is made of atom of different element. We will understand how atom of an element exist all about it mass and properties and what what make them to form molecule and compound.
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Chapter 4 Structure of the Atom
Until the structure of atom reveals it was thought atom are indivisible but as the modern technology is advancing more and more. We came to know that these atoms are made of subparticle and they together form an atom. An atom contain positive and negative charges, but yet is electrically stable.
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Chapter 5 The Fundamental Unit of Life
As the name of the chapter justify the cell is fundamental unit of life. As a house is made of thousand and million af brick similarly all organisms are made as these cell which perform all vital functions for our body. Together they form tissue then organ and organ system then a complete body cells have capability to divide and again form new cell to maintain continuity.
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Chapter 6 Tissues
A group of cell that perform similar function are tissue. In a organism how a very minute cell control and coordinate to perform similar function is all about the origin of living organism. Plants and animals are made of different tissue thats why plant are hard to touch but animals are soft. Let's read more of different types of tissues how they organise to form different organs.
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Chapter 7 Diversity in Living Organisms
We all have seen varieties of organisms in our surroundings. These creatures are nothing but diversity. How these organisms evolve is still a mystery but evolution explains that due to change in environment the organism adapted according to change that lead to formation of species. In this chapter we will reveal more about taxonomy of organisms given by many scientists so let's get more knowledge of this wonderful world with varieties of organisms.
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Chapter 8 Motion
We have seen things around us moving but we don't understand the physics behind this. Motion is due to speed, velocity, acceleration. In this chapter we will deal with these term and try to understand the concept and its physics.
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Chapter 9 Force and Laws of Motion
We have all heard about the great scientist Newton, he’s proposed different laws to explain motion. In this chapter we will discuss momentum and its effect with example. Conservation of momentum that means momentum can neither be created nor be destroyed.
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Chapter 10 Gravitation
We all know the earth revolve around sun and it rotate on its own axis yet we don't feel the rotation and very surprising that we are on the crust yet we don't fall on space. This is all due to gravitation force, which holds every object on earth. Newton once saw apple falling down the tree, Question arises why this apple falls down not raised up word and small curiosity gives the concept of gravity.
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Chapter 11 Work and Energy
From very previous class we have learnt about work, that is the ability to do work. But these are many situation where work done is said to be zero. Satellites revolving around earth is the best example. In this chapter we will discuss about when the work done is positive, negative and zero and various forms of energy.
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Chapter 12 Sound
Sensation of hearing is sound with our ears we can listen different kind of sound and even we understand the difference between them but we don't know actual science behind the sound so this chapter make us cleare how of sound originate, it propagates, its quality and many more. You may have also heard the animals like elephant dogs etc can feel natural calamities like earthquake before it commencement what the reason behind this lets understand.
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Chapter 13 Why Do We Fall ill
Health is the condition of the body when the body is fit in all aspects like physical, mental, social etc. This healthy condition can be interrupted by many pathogen and leads to disease which may communicable, non communicable, congenital. Here we will learn and understand what are causative organism how we can prevent from disease. Our immunity plays very important role let’s try to understand.
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Chapter 14 Natural Resources
Resources are the substance that fulfill our need some of these resources are naturally obtained and maintained by biogeochemical cycles. In this we will cover different topics such as how wind occurs. Why the atmosphere is very important for survival of life on earth and how it is different from the venus atmosphere. This is very exciting chapter which explains how biotic and abiotic components interact and maintain balance of earth. If these resource are used in excess they will vanish and remain for our future generalisation.
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Chapter 15 Improvement in Food Resources
India is second largest populated country to fulfil the daily need like food many improvement programme are launched so that demand can be completely solved and food should be supplied to each one. Different modern technologies are implemented to avoid chemical dependency with high yielding effects. Biotechnology is area where researches are going better and better so that quality and quantity of both animal and plant products can be enhanced.
Popular Questions of Class 9 Science
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Abdul, while driving to school, computes the average speed for his trip to be 20 km h-1. On his return trip along the same route, there is less traffic and the average speed is 40 km h-1. What is the average speed for Abdul’s trip?
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An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half-way down.
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A driver of a car travelling at 52 km h-1 applies the brakes and accelerates uniformly in the opposite direction. The car stops in 5 s. Another driver going at 3 km h-1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars travelled farther after the brakes were applied?
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Fig 8.11 shows the distance-time graph of three objects A,B and C. Study the graph and answer the following questions:
Fig. 8.11
(a) Which of the three is travelling the fastest?
(b) Are all three ever at the same point on the road?
(c) How far has C travelled when B passes A?
(d) How far has B travelled by the time it passes C? - Q:-
Soni says that the acceleration in an object could be zero even when several forces are acting on it. Do you agree with her? Why?
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Two objects, each of mass 1.5 kg, are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 m s-1 before the collision during which they stick together. What will be the velocity of the combined object after collision?
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How do poriferan animals differ from coelenterate animals?
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Two objects of masses 100 g and 200 g are moving along the same line and direction with velocities of 2 m s-1 and 1 m s-1, respectively. They collide and after the collision, the first object moves at a velocity of 1.67 m s-1. Determine the velocity of the second object.
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What happens to the force between two objects, if
(i) the mass of one object is doubled?
(ii) the distance between the objects is doubled and tripled?
(iii) the masses of both objects are doubled? - Q:-
The speed-time graph for a car is shown is Fig. 8.12.
Fig. 8.12
(a) Find how far does the car travel in the first 4 seconds. Shade the area on the graph that represents the distance travelled by the car during the period.
(b) Which part of the graph represents uniform motion of the car?
Recently Viewed Questions of Class 9 Science
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List any three human activities that you think would lead to air pollution.
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What are the major divisions in the Plantae? What is the basis for these divisions?
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Abdul, while driving to school, computes the average speed for his trip to be 20 km h-1. On his return trip along the same route, there is less traffic and the average speed is 40 km h-1. What is the average speed for Abdul’s trip?
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Diagrammatically show the difference between the three types of muscle fibres.
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Complete the table:
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During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3 × 108 m s-1.
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Two objects, each of mass 1.5 kg, are moving in the same straight line but in opposite directions. The velocity of each object is 2.5 m s-1 before the collision during which they stick together. What will be the velocity of the combined object after collision?
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The kinetic energy of an object of mass, m moving with a velocity of 5 m s-1 is 25 J. What will be its kinetic energy when its velocity is doubled? What will be its kinetic energy when its velocity is increased three times?
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Hydrogen and oxygen combine in the ratio of 1:8 by mass to form water. What mass of oxygen gas would be required to react completely with 3 g of hydrogen gas?
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An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s-2?