Answer: Option i)
When plaster of Paris is heated to 200°C, it transforms into anhydrous calcium sulphate, often known as dead plaster, which lacks setting properties since it absorbs water at a sluggish rate.
Answer: Option i)
When plaster of Paris is heated to 200°C, it transforms into anhydrous calcium sulphate, often known as dead plaster, which lacks setting properties since it absorbs water at a sluggish rate.