Q 2 Ms Usha a science teacher performed the following

Last updated: 6/21/2023

Q 2 Ms Usha a science teacher performed the following experiments Experiment 1 She heated sugar in a China dish A black substance was obtained along with caramel fumes Experiment 2 She mixed sand and crushed naphthalene balls in a China dish Then she covered the China dish with a watch glass with some ice kept on it and heated Crystals of pure naphthalene were seen on the underside of the watch glass Identify the changes taking place in these experiments Select an option Clear Res Experiment 1 Chemical change Crystallisation Experiment 2 Physical change Decomposition Experiment 1 Physical chang lication