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  • Plaster of paris is prepared on heating -Option: 1 Quick limeOption: 2 Slaked lime</div

Plaster of paris is prepared on heating -

Option: 1

Quick lime


Option: 2

Slaked lime


Option: 3

Lime stone


Option: 4

Gypsum


Answers (1)

best_answer

Plaster of paris is prepared by heating Gypsum.

When the gypsum is heated, it loses water molecules and forms calcium sulphate hemihydrate. The reaction will be

\underset{\textup{(Gypsum)}}{\mathrm{CaSO}_4 \cdot 2 \mathrm{H}_2 \mathrm{O}}+\text { Heat } \rightarrow \quad \underset{\textup{(Plaster of paris)}}{\mathrm{CaSO}_4 \cdot 1/2 \mathrm{H}_2 \mathrm{O}}+1 \frac{1}{2} \mathrm{H}_2 \mathrm{O}

Posted by

Pankaj Sanodiya

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