CLASS 9 SCIENCE CHAPTER-2 IS MATTER AROUND US PURE

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Question 1. What is meant by a substance?Solution : Substance can be defined as that kind of matter where constituent particles cannot be separated from each other by any physical process since they are all similar in chemical properties. Question 2. List the points of differences between homogeneous and heterogeneous mixtures.Solution : Question 3. Differentiate between …

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