Question

A white chemical compound becomes hard on mixing proper quantity of water. It is also used in surgery to maintain joints in a fixed position. Name the chemical compound.

September 22, 2024

Answer

The chemical compound is Plaster of Paris (POP), which is chemically known as calcium sulfate hemihydrate (CaSO₄·½H₂O).

Explanation (Additional Info):

Plaster of Paris is a white powder that hardens when mixed with the right amount of water.
The hardening process occurs due to the formation of calcium sulfate dihydrate (CaSO₄·2H₂O), which sets into a solid mass.
POP is widely used in orthopedic surgeries for making casts to immobilize fractured bones and maintain joints in a fixed position until they heal.
It is also used in construction, molding, and decorative work.

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