S Block Elements Question 147
Question: The difference of number of water molecules in gypsum and plaster of Paris is
Options:
A) $ \frac{5}{1} $
B) 2
C) $ 1/2 $
D) $ 1\frac{1}{2} $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Gypsum is $ CaSO_4.2H_2O, $ where as plaster of pans is $ CaSO_4\frac{1}{2}H_2O $ . No. of water $ =( 2-\frac{1}{2} )\xrightarrow{{}}\frac{3}{2} $ or $ 1\frac{1}{2} $ molecules
BETA
