Question:
Which is formed by reaction of Plaster of Paris with water?
Which is formed by reaction of Plaster of Paris with water?
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Plaster of Paris hardens into Gypsum when mixed with water.
Updated On: Nov 5, 2025
- Epsom
- Gypsum
- Limestone
- None of these
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The Correct Option is B
Solution and Explanation
Plaster of Paris (\( \text{CaSO}_4 \cdot \frac{1}{2} \text{H}_2\text{O} \)) reacts with water to form Gypsum (\( \text{CaSO}_4 \cdot 2\text{H}_2\text{O} \)), a hard solid.
\[
\text{CaSO}_4 \cdot \frac{1}{2} \text{H}_2\text{O} + \frac{3}{2} \text{H}_2\text{O} \rightarrow \text{CaSO}_4 \cdot 2\text{H}_2\text{O}
\]
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