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प्रश्न
Plaster of Paris should be stored in a moisture-proof container. Explain why?
टीपा लिहा
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उत्तर
The Plaster of Paris should be stored in a moisture-proof container, as it absorbs moisture and turns into hard substance (Gypsum) as shown in following chemical equation.
\[\ce{\underset{Plaster of Paris}{CaSO4. 1/2 H2O} + 3/2 H2O -> \underset{Gypsum}{CaSO4.}2H2O}\]
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