Question 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?

Open in App

Solution

When water is added to POP, it undergoes a chemical change. Its composition changes and is converted into another substance (gypsum). Since it is a chemical change, it cannot be reversed.

Suggest Corrections

Similar questions

Q. Assertion :Plaster of Paris is used by doctors for setting fractured bones. Reason: When Plaster of Paris is mixed with water and applied around the fractured limbs, it sets into a hard mass.

Why is POP used for setting fractured bones?

Q. Why are fractured bones plastered?

A compound X having 2 molecules of water of crystallization.On heating, it becomes a new compound Y used in plastering of fractured bones.The compound X is ___ .

Q. On the basis of following features identify the correct option:
I. It is stored in air-tight bags.
II. It is used in surgical bandages for setting fractured bones.

Join BYJU'S Learning Program

Question 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?

When water is added to POP, it undergoes a chemical change. Its composition changes and is converted into another substance (gypsum). Since it is a chemical change, it cannot be reversed.

Question 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?