Plaster of paris is

C a S O_{4} .2 H_{2} O

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C a S O_{4} .3 H_{2} O

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C a S O_{4} . H_{2} O

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C a S O_{4} . \frac{1}{2} H_{2} O

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Solution

The correct option is D $C a S O_{4} . \frac{1}{2} H_{2} O$
Plaster of paris is $C a S O_{4} . \frac{1}{2} H_{2} O$ . It is obtained by heating gypsum at $120^{o} C$ . It has the property of setting to a high mass.

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Similar questions

(a) What is plaster of Paris? Write the chemical formula of plaster of Paris.

(b) How is plaster of Paris prepared? Write the chemical equation of the reaction involved.

(d) State two important uses of plaster of Paris.

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