Subject :NSO Class : Class 10
A compound is prepared from gypsum upon heating to a temperature of 373 K and it changes back to gypsum on adding water. Which is the incorrect statement about the compound?
A The compound is used for setting fractured bones.
B The compound is called plaster of Paris which is calcium sulphate dihydrate with a formula CaSO4.2H2O.
C If heated at higher temperature, the compound becomes dehydrated and is called dead burnt plaster.
D Both (A) and (B).
option is d