When Plaster of Paris (CaSO₄·½H₂O) is mixed with water, it hardens. Which process is responsible for this hardening?

Subject: General Awareness | Topic: Science | Difficulty: MEDIUM

Options

1. (A) Oxidation of calcium ions
2. (B) Neutralisation between an acid and a base
3. (C) Rehydration to form gypsum
4. (D) Dehydration of calcium sulphate

Verified Answer

Option (C): Rehydration to form gypsum

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