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Compound is a pure substance made up of two or more elements combined chemically in a definite ratio. Is Matter Around Us Pure. (b) Milk. (a) alcohol is the solute and iodine is the solvent. It is a physical change and H2 gas is evolved. The Fundamental Unit of Life. Impure substances. It is a chemical change and zinc dissolves with the evolution of 1--12 gas. is available for reading or download on this page. Which of the following concerning the species X, Y and P are correct, Crystallization method cannot be used to purify those mixture which​, By Jagranjosh | Last updated: Oct 22, 2020. Diversity in Living Organisms. Application Diagnostic Laboratories for blood and urine test. Multiple Choice Questions (MCQs) Question 1: Which of the following statements are true for pure substances? IX Is Matter around Us Pure MCQ. Also explore over 436 similar quizzes in this category. - Practice Test, Class 9 Science | 20 Questions MCQ Test has questions of Class 9 preparation. 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