Which substance is used to join broken bones?
Answer
Correct Answer : a ) Plaster of Paris
Explanation :Plaster of Paris, also known as Gypsum Plaster, is a white powder consisting of calcium sulphate hemihydrate. The natural form of the compound is the mineral bassanite. Plaster of Paris is stored in moisture-proof containers because the presence of moisture can cause the slow setting of plaster of Paris by bringing about its hydration, which will make it useless after some time.
Uses of gypsum plaster:
- For making surfaces like the walls of a house smooth before painting them.
- For making toys, decorative materials, cheap ornaments, etc.
- An orthopedic cast is used in hospitals for setting fractured bones in the right position to ensure correct healing and avoid nonunion. It keeps the fractured bone straight.
- It is used in chemistry labs for sealing air-gaps in apparatus when air-tight arrangement is required.
Hence, option (a) is correct.
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