Plaster of paris is prepared from

Quick lime

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Slacked lime

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Gypsum

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Lime stone

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Solution

The correct option is C Gypsum
Plaster of paris is prepared by heating Gypsum. When we heat the gypsum, it loses water molecule and forms calcium sulphate hemihydrate. The reaction will be
$C a S O_{4} .2 H_{2} O (Gypsum) 373 K - -- \to C a S O_{4} . \frac{1}{2} H_{2} O + 1 \frac{1}{2} H_{2} O (Plaster of Paris)$

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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.

Plaster of Paris is prepared by heating one of the following to a temperature of $100^{o} C$ . This is :

(a) $C a S O_{3} 2 H_{2} O$

(b) $C a C l_{2} 2 H_{2} O$

(d) $C a S O_{4} .2 H_{2} O$

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