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Matter in our Surroundings

NCERT Solutions for class IX science chapter 1 Matter in our Surroundings from NCERT text book prescribes for class 9 Science. The chapter covered The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close. A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

Is Matter around Us Pure

NCERT Solutions for class IX science chapter 2 Is Matter around Us Pure from NCERT text book prescribes for class 9 Science. The chapter covered List the points of differences between homogeneous and heterogeneous mixtures. What is meant by a Pure substance? Differentiate between homogeneous and heterogeneous mixtures with examples.

Atoms and Molecules

NCERT Solutions for class IX science chapter 3 Atoms and Molecules from NCERT text book prescribes for class 9 Science. The chapter covered In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass. sodium carbonate + ethanoic acid → sodium ethanoate + carbon dioxide + water

Structure of the Atom

NCERT Solutions for class IX science chapter 4 Structure of the Atom from NCERT text book prescribes for class 9 Science. The chapter covered If an atom contains one electron and one proton, will it carry any charge or not? On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole. On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?

The Fundamental Unit of Life

NCERT Solutions for class IX science chapter 5 The Fundamental Unit of Life from NCERT text book prescribes for class 9 Science. The chapter covered Why is the cell called the structural and functional unit of life? Why is the plasma membrane called a selectively permeable membrane? Fill in the gaps in the following table illustrating differences between prokaryotic and eukaryotic cells.

Tissues

NCERT Solutions for class IX science chapter 6 Tissues from NCERT text book prescribes for class 9 Science. The chapter covered What is the utility of tissues in multi-cellular organisms? Name the tissue responsible for movement in our body. How many types of elements together make up the xylem tissue? Name them. Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.

Diversity in Living Organisms

NCERT Solutions for class IX science chapter 7 Diversity in Living Organisms from NCERT text book prescribes for class 9 Science. The chapter covered A large number of organisms exist on this earth. We cannot study such enormous biodiversity one by one i.e. studying variety of life forms individually is an impossible task. Hence, we make groups or categories of organisms depending upon their similarities and dissimilarities with other organisms. This allows an  easier and systematic study of the life forms.

Motion

NCERT Solutions for class IX science chapter 8 Motion from NCERT text book prescribes for class 9 Science. The chapter covered An object has moved through a distance. Can it have zero displacement? If yes, support your answer with an example. A farmer moves along the boundary of a square field of side 10 m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds?

Forces and Laws of Motion

NCERT Solutions for class IX science chapter 9 Forces and Laws of Motion from NCERT text book prescribes for class 9 Science. The chapter covered A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team

Gravitation

NCERT Solutions for class IX science chapter 10 Gravitation from NCERT text book prescribes for class 9 Science. The chapter covered State the universal law of gravitation. Every mass in this universe attracts every other mass with a force which is directly proportional to the product of two masses and inversely proportional to the square of the distance between them. 

Work and Energy

NCERT Solutions for class IX science chapter 11 Work and Energy from NCERT text book prescribes for class 9 Science. The chapter covered A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force acts on the object through the displacement. What is the work done in this case? Write an expression for the work done when a force is acting on an object in the direction of its displacement.

Sound

NCERT Solutions for class IX science chapter 12 Sound from NCERT text book prescribes for class 9 Science. The chapter covered How does the sound produced by a vibrating object in a medium reach your ear? Suppose you and your friend are on the moon. Will you be able to hear any sound produced by your friend? What are wavelength, frequency, time period and amplitude of a sound wave?

Why Do We Fall ill

NCERT Solutions for class IX science chapter 13 Why Do We Fall ill from NCERT text book prescribes for class 9 Science. The chapter covered State any two conditions essential for good health. State any two conditions essential for being free of disease. Are the answers to the above questions necessarily the same or different? Why? In which of the following case do you think the long-term effects on your health are likely to be most unpleasant?

Natural Resources

NCERT Solutions for class IX science chapter 14 Natural Resources from NCERT text book prescribes for class 9 Science. The chapter covered How is our atmosphere different from the atmospheres on Venus and Mars? List any three human activities that you think would lead to air pollution. What is the major source of fresh water in the city/town/village where you live?

Improvement in Food Resources

NCERT Solutions for class IX science chapter 15 Improvement in Food Resources from NCERT text book prescribes for class 9 Science. The chapter covered What do we get from cereals, pulses, fruits and vegetables? How do biotic and abiotic factors affect crop production? What are the desirable agronomic characteristics for crop improvements?



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