S Block Elements Question 9
Question: Which of the following salt becomes plaster of paris on being appropriately hydrated
[CPMT 1985]
Options:
A) $ ZnCO_3 $
B) $ CaSO_4 $
C) $ MgSO_4 $
D) $ CaCO_3 $
Show Answer
Answer:
Correct Answer: B
Solution:
$ \underset{Gypsum}{\mathop{CaSO_4.2H_2O}}\xrightarrow{120^{o}C}\underset{\text{Ploster of paris}}{\mathop{CaSO_4.\frac{1}{2}H_2O}}+1\frac{1}{2}H_2O $
BETA
