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Plaster of Paris on losing water and gai...

Plaster of Paris on losing water and gaining water gives `A` and `B`. Identify `A` and `B`.

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To solve the question regarding the identification of substances `A` and `B` formed from Plaster of Paris when it loses and gains water, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Chemical Formula of Plaster of Paris**: - Plaster of Paris is chemically represented as \( \text{CaSO}_4 \cdot \frac{1}{2} \text{H}_2\text{O} \). This indicates that it contains calcium sulfate with half a water molecule. 2. **Determine the Product `A` when Plaster of Paris Loses Water**: ...
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