NCERT Solutions Class 9 Science Chapter 8 Motion

Class 9 Science NCERT Solutions Motion Page No: 100 1. An object has moved through a distance. Can it have zero displacement? If yes, support your Answer : with an example. Answer : Yes, an object can have zero displacement even when it has moved through a…

NCERT Solutions Class 9 Science Chapter 6 Tissues

Class 9 Science NCERT Solutions Tissues 1. What is a tissue? Answer : Tissue is a group of cells that are similar in structure and are organised together to perform a specific task. 2. What is the utility of tissues in multi-cellular organisms? Answer : In…

NCERT Solutions Class 9 Science Chapter 9 Force and Laws of Motion

Class 9 Science NCERT Solutions Force and Laws of Motion Page No: 118 1. Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five-rupees coin and a one-rupee coin? Answer : Inertia is the measure of the…

NCERT Solutions Class 9 Science Chapter 7 Diversity in Living Organisms

Class 9 Science NCERT Solutions Diversity in Living Organisms Page No: 80 1. Why do we classify organisms? Answer : There are millions of organisms on this earth. So, it is harder to study them one by one. Therefore, we look for similarities among them and classify them…

NCERT Solutions Class 9 Science Chapter 11 Work and Energy

Class IX  Science Chapter 11 – Work and Energy Question 1: A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (Fig. 11.3). Let us take it that the force acts on the object through the displacement. What is the work done in…

NCERT Solutions Class 9 Science Chapter 13 Why Do We Fall Ill

Class IX  Science Chapter 13 – Why Do We Fall Ill Question 1: State any two conditions essential for good health. Answer: The twoconditions essential for good health are: (i) An individual must have better health facilities and more professionals to deal with…

NCERT Solutions Class 9 Science Chapter 5 The Fundamental Unit of Life

Chapter 5 – The Fundamental Unit of Life Question 1: Who discovered cells and how? Answer: Cells were discovered in 1665 by an English Botanist, Robert Hooke. He used a primitive microscope to observe cells in a cork slice. Question 2: Why is the cell called…

NCERT Solutions Class 9 Science Chapter 4 Structure of the Atom

  Class IX Science  Chapter 4 – Structure of the Atom Question 1: What are canal rays? Answer : Canal ra ys are positively charged radiations. These rays consist of positively charged particles known as protons. They were discovered by Goldstein in 1886…

NCERT Solutions Class 9 Science Chapter 12 Sound

Class IX  Science Chapter 13 – Why Do We Fall Ill Question 1: State any two conditions essential for good health. Answer: The twoconditions essential for good health are: (i) An individual must have better health facilities and more professionals to deal with…

NCERT Solutions Class 9 Science Chapter 14 Natural Resources

Class IX  Science Chapter 14 – Natural Resources Question 1: How is our atmosphere different from the atmospheres on Venus and Mars?  Answer: Earth’s atmosphere is different from those of Venus and Mars. This difference lies essentially in their…

NCERT Solutions Class 9 Science Chapter 1 Matter in Our Surroundings

Class IX  Science Chapter 1 – Matter in Our Surroundings Question 1: Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold, cold drink, smell of perfume. Answer: Anything that occupies space and has mass is called matter.…

NCERT Solutions Class 9 Science Chapter 2 Is Matter Around Us Pure

Class IX  Science Chapter 2 – Is Matter Around Us Pure Question 1: What is meant by a pure substance? Answer: A pure substance is the one that consists of a single type of particles, i.e., all constituent particles of the substance have the same chemical…

NCERT Solutions Class 9 Science Chapter 15 Improvement in Food Resources

Question 1: How do biotic and abiotic factors affect crop production? Answer: A variety of biotic factors such as pests, nematodes, diseases, etc. can reduce the net crop production. A pest causes damage to agriculture by feeding on crops. For example, boll weevil…

NCERT Solutions Class 9 Science Chapter 10 Gravitation

Chapter 10 – Gravitation Question 1: State the universal law of gravitation Answer: The universal law of gravitation states that every object in the universe attracts every other object with a force called the gravitational force. The force acting between two objects is…

NCERT Solutions Class 9 Science Chapter 3 Atoms and Molecules

Class IX Chapter 3 – Atoms and Molecules Science Question 1: 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…