1.

When gypsum is heated to 393K, it forms:

Answer»

`CaSO_(4)*(1)/(2)H_(2)O`
DEAD BURNT plaster
`CasO_(4)*5H_(2)O`
Anhydrous `CaSO_(4)`

Solution :`CaSO_(4)*2H_(2)O overset(393K)to CaSO_(4)*(1)/(2)H_(2)O`


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