S Block Elements Question 1
Question: Plaster of Paris is
[CPMT 1972, 76, 78, 83, 87, 88, 90, 91, 93, 94; JIPMER 2002; MP PET 1986, 2001; BHU 1992, 95, 2000; MNR 1982; DCE 2000; Manipal MEE 1995; NCERT 1976; Bihar MEE 1997; EAMCET 1978; AMU 1982, 84; DPMT 1982, 83]
Options:
A) $ CaSO_4.2H_2O $
B) $ CaSO_4.3H_2O $
C) $ CaSO_4.H_2O $
D) $ CaSO_4.\frac{1}{2}H_2O $
Show Answer
Answer:
Correct Answer: D
Solution:
$ CaSO_4.\frac{1}{2}H_2O $ or $ {{(CaSO_4)}_2}.H_2O $
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