Setting of plaster of paris involves A. Dehydration process B. Hydration to form other hydrates C. Oxidation process D. Reduction process

The correct answer is: B. Hydration to form other hydrates.

Plaster of paris is a white powder that is made by heating gypsum to 130–140 °C. When water is added to plaster of paris, it undergoes a chemical reaction called hydration, which causes it to

The dehydration process is the opposite of hydration. It is a process in which water is removed from a substance. In the case of plaster of paris, dehydration would cause it to crumble and return

The oxidation process is a chemical reaction in which oxygen is added to a substance. In the case of plaster of paris, oxidation would cause it to turn black.

The reduction process is a chemical reaction in which oxygen is removed from a substance. In the case of plaster of paris, reduction would cause it to turn white again.

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