Question

Hardening of plaster of paris is because of

$\sf1 ) \: The \: formation \: of \: CaSO_3$

$\sf2 ) \: The \: formation \: of \: CaSiO_3$

3) The transition of orthorhombic gypsum to monoclinic gypsum

4) Dehydration​

Answer 1

Answer:

3) The transition of orthorhombic gypsum to monoclinic gypsum.

Answer 2

Hardening of Plaster of Paris is because of dehydration..

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