1.

why calcium sulphate hemihydrate is called as plaster of paris

Answer» You will live 100 years necha ham aapki baat kar rahe the puja
Aree abhi aapke hi bare mei baat kr rhe the puja ji aur aap aa gye, 100 saal jiyoge??
Because plaster of paris is its common name.Just simple as that: Why your name is Sharath.
Becoz it contains 1/2 of water of crystallization.
Because it was first discovered in paris


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