Name the product obtained when Plaster of Paris is mixed with water. State the use of the product. Give two used of $P O P$ .

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Solution

Plaster of Paris is $C a S O_{4} . \frac{1}{2} H_{2} O$ when it is hydrated $C a S O_{4} .2 H_{2} O$ is formed and this product is called gypsum. Gypsum is used as a fertiliser and soil conditioner. It is also used as a finish for wall and ceilings.
$P O P$ is used in:
(a) It is used in surgery for setting broken or fractured bones.
(b) It is used for making casts for statues, in dentistry, for surgical instruments and toys etc

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