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CBSE 9th Chemistry | Matter-Nature and Behaviour (Long Answer Type Questions with Answers)
Matter-Nature and Behaviour (Long Answer Type Questions with Answers) Question 1. (a) Justify the existence of matter in three states (i.e., solids, liquid, gaseous) (b) Discuss the changes observed when ammonium chloride is heated. (c) Convert -18°C to Kelvin scale. Answer. (a) The existence of matter in solid, liquid or gaseous state depends upon…