What is obtained when gypsum is heated at $300\,^oC$?
- A$CaSO_4 \cdot 2H_2O$
- B$CaSO_4$
- C$CaSO_4 \cdot \frac{1}{2}H_2O$
- D$SO_3$ and $CaO$
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Identify the correct statements from the following.
$(A)$ $BeSO_4$ is soluble in water.
$(B)$ $BeO$ is an amphoteric oxide.
$(C)$ $CO$ can be obtained by heating $CaCO_3$ at $1070-1270 \ K$.
$(A)$ $BeSO_4$ is soluble in water.
$(B)$ $BeO$ is an amphoteric oxide.
$(C)$ $CO$ can be obtained by heating $CaCO_3$ at $1070-1270 \ K$.
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