Question

Gypsum on ______ gives plaster of paris. Plaster of paris hardens on.

a. Losing water molecules, heating
b. Combining with water molecules,cooling
c. Heating, combining with water molecules
d. Cooling, heating​

Answer 1

Answer:

b. Combining with water molecule, cooling

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Answer 2

Answer:

Gypsum on heating gives plaster of paris. Plaster of paris hardens on combining with water molecules.

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