NCERT Solutions for Class 6 Science Chapter 6
Important NCERT Questions
Class 6th Chapter 6 Changes Around Us
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 6
A thick coating of a paste of Plaster of Paris (POP) is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilised. Can the change in POP be reversed?
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When water is added to POP, it undergoes a chemical change. Its composition changes and is converted into another substance. Since it is a chemical change, so it cannot be reversed.
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