1
Question
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?
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?
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Solution
When
water is added to plaster of Paris (POP),
it changes to another substance and on drying it hardens. Once the
POP has hardened, its shape cannot be changed. Therefore, the change
in POP cannot be reversed.
When water is added to plaster of Paris (POP), it changes to another substance and on drying it hardens. Once the POP has hardened, its shape cannot be changed. Therefore, the change in POP cannot be reversed.
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