Class 9 Science Chapter 2 | Is Matter Around Us Pure NCERT Solutions Page 15 1.What is meant by a substance? Answer: A pure substance is the one that consist of a single type of particle i.e. all constituent particles of the substance have the same chemical nature. 2. List the points of differences between homogeneous and heterogeneous … [Read more...] about Chapter 2 Is Matter Around Us Pure
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Chapter 1 Matter in Our Surroundings
Class 9 Science Chapter 1 Matter in Our Surroundings NCERT Solutions Question Answers, Page 3 1. Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold drinks , lemon, water, smell of perfume. Answer: Anything which occupies space and has mass is called matter. There are three states of matter: solid, liquid and gas. Chair, … [Read more...] about Chapter 1 Matter in Our Surroundings
Chapter 18 Pollution of Air and Water
Class 8 Science Chapter 16 | Pollution of Air and Water NCERT Solutions 1. What are the different ways in which water gets contaminated ? Answer: Water gets contaminated by : a) Sewage waste: Waste material from toilet, kitchens, laundry which are discharged in water without proper treatment causes its contamination. b) Industrial dispose: Harmful and poisonous … [Read more...] about Chapter 18 Pollution of Air and Water
Chapter 15 Some Natural Phenomena
Class 8 Science Chapter 15 | Some Natural Phenomena NCERT Solutions Select the correct option in Questions 1 and 2. 1. Which of the following cannot be charged easily by friction? (a) A plastic scale (b) A copper rod (c) An inflated balloon (d) A woollen cloth. Answer: (b) A copper rod 2. When a glass rod is rubbed with a piece of silk cloth the rod (a) and the … [Read more...] about Chapter 15 Some Natural Phenomena
Chapter 16 Light
NCERT Solutions for Chapter 16 Light Class 8 1. Suppose you are in a dark room. Can you see objects in the room? Can you see objects outside the room. Explain. Answer: An object becomes visible when light reaches our eyes after being reflected from the object.If we are in dark room, then it is not possible for us to see the objects because no light is reflected from the … [Read more...] about Chapter 16 Light