Question

Gypsum becomes anhydrous at:
300°C
200°C
150°C
195°C​

Answer 1

Answer:

When heated to 205°C, puregypsum loses its luster and its specific gravity is increased from 2.3 to 2.95 due to the loss of water of crystallization. Gypsum has a unique property of moulding. When heated it gives up combined water and easily turns into powder

Answer 2

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300°C

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