A) \[\frac{5}{1}\]
B) 2
C) \[1/2\]
D) \[1\frac{1}{2}\]
Correct Answer: D
Solution :
[d] Gypsum is \[CaS{{O}_{4}}.2{{H}_{2}}O,\] where as plaster of pans is \[CaS{{O}_{4}}\frac{1}{2}{{H}_{2}}O\]. No. of water \[=\left( 2-\frac{1}{2} \right)\xrightarrow{{}}\frac{3}{2}\] or \[1\frac{1}{2}\]molecules
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