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Cement and Its uses

A thick coati...

Question

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 immobilized. Can the change in POP be reversed?

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Solution

The change in Plaster of Paris cannot be reversed.

When water is added to POP, it undergoes a chemical change. A new substance is formed, and this change cannot be reversed.

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A thick coating of Plaster of Paris (POP) paste is applied over the bandage on a fractured bone. It becomes hard on drying to keep the fractured bone immobilized. Can the change in POP be reversed?

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 ___ .

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Cement and Its uses

Standard VI Chemistry

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